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COMSPHERE 3900 Series Modems

14-8

September 1998

3910-A2-GN32-40

Table 14-2

(4 of 10)

391x Series AT Commands

Command

DCP LCD

Command

Sequence

Description

Extended Result Code, Dial Tone Detect, and Busy Tone Detect
Configuration Options.

Extended

Dial Tone

Busy Tone

Result Code:

Detect:

Disable

Enable

Disable

Enable

Disable

Enable

Disable

Enable

Add/EC

Enable

Add/V42.MNP

Enable

Use DTE Rate

Enable

Extended
Result Code:
Configure\Edit\
DTE Dialer

Dial Tone
Detect:
Configure\Edit\
Line Dialer

Busy Tone
Detect:
Configure\Edit\
Line Dialer

Extended Result Code:

Enable

Displays all result codes listed in Table 14-1 except for
error control suffix.

Disable

Only displays OK, CONNECT, RING, NO CARRIER,
ERROR

ERROR.

Add/EC

Displays result codes with /EC suffix.

Add/V42,MNP Displays result codes with V.42 or MNP suffix.

Use DTE Rate Displays DTE data rate instead of line rate.

Dial Tone Detect:

Enable

Sets the modem for dial tone detect

Enable

Sets the modem for dial tone detect.

Disable

Sets the modem for blind dialing.

NOTE: It may not be possible to disable Dial Tone Detect in some

countries.

Busy Tone Detect:

Enable

Modem monitors for busy tone.

Disable

Modem ignores busy tone.

Long Space Disconnect.

Disable. Ignores long space.

Enable. Disconnects if long space is detected. Enables
transmission of a long space.

Configure/Edit/
Line Dialer

Содержание COMSPHERE 3910

Страница 1: ...COMSPHERE 3900 SERIES MODEMS MODELS 3910 AND 3911 POINT TO POINT MULTIPOINT INSTALLATION AND OPERATION MANUAL Document No 3910 A2 GN32 41 February 2002 ...

Страница 2: ...rnet Visit the Paradyne World Wide Web site at http www paradyne com Via Telephone Call our automated call system to receive current information via fax or to speak with a company representative Within the U S A call 1 800 870 2221 Outside the U S A call 727 530 2340 Trademarks All products and services mentioned herein are the trademarks service marks registered trademarks or registered service m...

Страница 3: ...fied service personnel 6 General purpose cables are provided with this product Special cables which may be required by the regulatory inspection authority for the installation site are the responsibility of the customer 7 When installed in the final configuration the product must comply with the applicable Safety Standards and regulatory requirements of the country in which it is installed If nece...

Страница 4: ...HARMFUL INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS OWN EXPENSE THE AUTHORITY TO OPERATE THIS EQUIPMENT IS CONDITIONED BY THE REQUIREMENTS THAT NO MODIFICATIONS WILL BE MADE TO THE EQUIPMENT UNLESS THE CHANGES OR MODIFICATIONS ARE EXPRESSLY APPROVED BY PARADYNE WARNING WARNING TO USERS OF DIGITAL APPARATUS IN CANADA THE DIGITAL APPARATUS DOES NOT EXCEED ...

Страница 5: ...cal Specifications 1 8 2 Modem Installation Overview 2 1 391x Series Modem Package 2 1 Model 3910 Modem Installation 2 2 DTE Connection 2 4 Model 3910 4 Wire 2 Wire Leased Line Connection 2 4 Dial Network Connection 2 4 Model 3910 Dial Backup Connection 2 4 Model 3910 Leased Backup Connection 2 4 Network Management System Connection 2 5 Power Supply Connection 2 5 Modem Power Up 2 5 Selecting Fact...

Страница 6: ...iew 5 1 Configure Branch 5 4 Configuration Tables 5 9 6 Poll List Branch Overview 6 1 7 Control Branch Overview 7 1 Speaker 7 2 Reset 7 3 Data Stream 7 3 EIA LEDs 7 4 Make Busy Remove Make Busy 7 5 Service Line Disconnect Service Line 7 6 Download Software 7 7 VF Thresholds Update 7 13 8 Test Branch Overview 8 1 Abort 8 2 Self 8 3 Loc Analog Loop 8 4 Rem Digital Loop 8 5 Loc Digital Loop 8 6 Patte...

Страница 7: ...al Dialing When the Remote Modem is Configured for Auto Answer 11 2 Manual Dialing When the Remote Modem is Configured for Manual Answer 11 3 12 Dial Access Security Overview 12 1 Security Branch 12 4 Security Configuration Options 12 13 Security Password Entry Techniques 12 16 Database Table Examples 12 18 13 Remote Branch Overview 13 1 14 AT Command Set and S Registers Overview 14 1 Operating Mo...

Страница 8: ...GN32 40 Appendices A Menu Tree A 1 B Troubleshooting B 1 C Pin Assignments C 1 D CCITT V 25bis Dialing Commands and Response D 1 E ASCII Character Table E 1 F Default Configuration Options F 1 G Sample Configurations G 1 H Equipment List H 1 Glossary Index ...

Страница 9: ...Pattern Test and Local Analog Loopback Test 8 7 8 5 Pattern Test and Digital Loopback Test 8 8 8 6 End to End Pattern Test 8 8 10 1 Dial Backup 10 5 C 1 VF Pin Orientation C 3 C 2 Wiring Diagram Y Cable for External Telephone C 4 C 3 Wiring Diagram 8 Position to 6 Position Crossover Cable C 5 C 4 Wiring Diagram 25 Pin Crossover Cable C 6 G 1 Sample Configuration Point to Point G 2 G 2 Sample Confi...

Страница 10: ...COMSPHERE 3900 Series Modems vi September 1998 3910 A2 GN32 40 This page intentionally left blank ...

Страница 11: ...uration Options 5 46 5 8 Miscellaneous Configuration Options 5 48 7 1 Valid Ranges for VF Thresholds 7 16 10 1 Valid Dial Command Modifiers 10 8 12 1 Edit Password Table Group Options 12 7 12 2 Set Answer Security Group Options 12 9 12 3 Set Originate Security Group Options 12 10 12 4 Security Configuration Options 12 13 12 5 Security Database Table Using VF Side Passwords 12 18 12 6 Security Data...

Страница 12: ...MSPHERE 3900 Series Modems viii September 1998 3910 A2 GN32 40 Table Page D 1 V 25bis Commands D 6 D 2 V 25bis Response Messages D 7 E 1 ASCII Characters E 1 F 1 Factory Default Configuration Options F 2 ...

Страница 13: ... how to use the Status branch of the front panel menu to monitor the status of the modem and view identity information Chapter 5 provides the information required to set configuration options in the 391x Series modems using the modem s diagnostic control panel Chapter 6 describes the Poll List Branch of the DCP menu Chapter 7 describes the Control Branch Chapter 8 describes the Test Branch Chapter...

Страница 14: ...s Appendix H provides an equipment list for the 391x Series modems The Glossary provides a description of terms used throughout this manual Related Documents 3000 A2 GA31 COMSPHERE 3000 Series Carrier Installation Manual 3610 A2 GZ45 3600 Hubbing Device Feature Number 3600 F3 300 Installation Instructions 3910 A2 GK41 COMSPHERE 3900 Series Modems Models 3910 and 3911 Installation Instructions Cont...

Страница 15: ... Point to Point Diagnostic 1200 2400 bps Trellis Multipoint 19200 14400 9600 7200 4800 and 2400 bps V 22bis 2400 bps V 27bis 4800 and 2400 bps V 33 14400 and 12000 bps and V 29 9600 7200 and 4800 bps Dial line modulations V 32terbo 19200 and 16800 bps V 32bis 14400 12000 9600 7200 and 4800 bps V 32 9600 and 4800 bps Paradyne Point to Point Diagnostic 1200 2400 bps V 22bis 2400 bps V 22 1200 bps V ...

Страница 16: ...leased backup applications a 2 wire leased line is used as the backup facility instead of the normal 2 wire dial line Plug the leased line into the jack labeled DIAL on the rear panel of the modem see Figure 2 1 in Chapter 2 and enable the Dual_Leased_Ln configuration option Refer to Leased Line in Chapter 5 DCP Configuration for configuration options Except for dialing ring indication and call pr...

Страница 17: ...d a row of 13 LED status indicators For a better understanding of DCP operation refer to Chapter 3 DCP Operation SPEAKER DIAGNOSTIC CONTROL PANEL LCD AND KEYPAD STATUS INDICATORS POWER SUPPLY POWER CORD 496 14160 03 POWER ON OFF LEASED DIAL DTE 1 NMS POWER IN Figure 1 1 Model 3910 The rear of the modem contains an ON OFF power switch a low voltage dc power connector an 8 pin modular connector LEAS...

Страница 18: ...rrier s optional speaker The Model 3911 modem s rear has two edge card connectors that mount into a connector plate located on the rear of the carrier This connector plate has two DB 25 S connectors one providing an EIA 232 D DTE interface and one for future functionality FACEPLATE 496 14178b EIA232 V 24 EDGE CARD CONNECTOR FUTURE USE BACK CONNECTOR PLATE V 35 3600 3500 RS366A V 25 3800 EIA232 V 2...

Страница 19: ...ard assembly If requested this information must be provided to the telephone company 2 Page A of this manual contains the Universal Service Order Codes USOC associated with the services on which the equipment is to be connected 3 An FCC compliant telephone cord and modular plug is provided with this equipment This equipment is designed to be connected to the telephone network or premises wiring us...

Страница 20: ... our automated call system to receive current information via fax or to speak with a company representative Within the U S A call 1 800 870 2221 Outside the U S A call 727 530 2340 If the trouble is causing harm to the telephone network the telephone company may request that you remove the equipment from the network until the problem is resolved 8 The user is not authorized to repair or modify the...

Страница 21: ... by an authorized Canadian maintenance facility designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecommunications company cause to request the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connections of the power utility telephone line and internal metallic w...

Страница 22: ...3910 Certification Number See label on modem Model 3911 Certification Number See label on modem COMPATIBILITY Leased Line Modulations Paradyne V 32terbo 19200 16800 bps ITU T V 32bis 14400 12000 9600 7200 4800 bps ITU T V 32 9600 4800 bps Paradyne Trellis Multipoint 19200 14400 9600 7200 4800 2400 bps ITU T V 22bis 2400 bps ITU T V 27bis 4800 2400 bps ITU T V 33 14400 12000 bps ITU T V 29 9600 720...

Страница 23: ...nds 1 14 kg Model 3910 without power supply 1 0 pounds 0 45 kg Model 3911 Height 2 1 inches 5 4 cm Model 3910 7 1 inches 18 1 cm Model 3911 Width 7 6 inches 19 4 cm Model 3910 0 9 inches 2 3 cm Model 3911 Depth 12 1 inches 30 8 cm Model 3910 13 4 inches 34 0 cm Model 3911 TRANSMIT LEVEL Leased Line North America 0 through 15 dBm in 1 dBm decrements Factory default is 0 dBm Leased Line All Other Co...

Страница 24: ...al Specifications for 391x Series Modems Specifications Description DATA RATES Leased Line 19200 16800 14400 12000 9600 7200 4800 2400 1200 bps Dial Line 19200 16800 14400 12000 9600 7200 4800 2400 1200 600 300 bps ERROR CONTROL ITU T V 42 MNP 4 2 DATA COMPRESSION ITU T V 42bis MNP Class 5 ...

Страница 25: ...s package check for damage and verify that the following items are present For the standalone model Installation instructions Model 3910 modem Power supply One 6 position 4 wire modular cord in selected models One 8 position 8 wire modular cord in selected models For the carrier mounted model Installation instructions Model 3911 modem Rear connector plate with two DB 25 S edge card connectors If a...

Страница 26: ... modems installed in Slots 9 16 required for dial line applications For installation of the COMSPHERE 3000 Series Carrier into a cabinet refer to the COMSPHERE 3000 Series Carrier Installation Manual Model 3910 Modem Installation Before installing your standalone modem make sure your installation site is clean and well ventilated Allow space around the modem for installing cables and telephone cor...

Страница 27: ...ndix C Pin Assignments 8 POSITION 8 CONDUCTOR PLUG FOR LEASED LINE NETWORK OPERATION 6 POSITION 4 CONDUCTOR PLUG FOR PERMISSIVE DIAL NETWORK OPERATION DB 25 P CONNECTOR FOR DATA TERMINAL EQUIPMENT OPERATION SUB MINIATURE 4 CONDUCTOR PLUG FOR NETWORK MANAGEMENT OPERATION POWER SUPPLY DTE 2 DTE 3 DTE 4 DTE 1 LEASED DIAL NMS PWR ON OFF NOTE THE DIAL JACK IS ALSO USED FOR 2 WIRE LEASED BACKUP Figure 2...

Страница 28: ...one company provides the line termination jacks for the permissive service you request Advance coordination with the telephone company is suggested when connecting the modem to telephone dial lines PSTN In the Permissive mode the modem s transmit output level is fixed at 9 dBm The telephone company assumes that the line loss is 3 dB and no compensation is provided for additional losses A Permissiv...

Страница 29: ...er supply s 8 pin DIN connector into the modem s rear panel dc power receptacle Figure 2 1 3 Connect the power supply to a grounded ac power outlet Modem Power Up Once your modem is properly connected to the power supply leased and or dial lines and the DTE press the modem s rear panel power switch to the ON position The modem begins a power up self test in which all DCP LEDs light This test takes...

Страница 30: ...splay LCD consists of two 16 character lines which display modem status control functions and configuration options as well as indicating your location in the Top Level menu tree Appendix A To change a factory template from the Sync Leased preset configuration using the DCP perform the following steps 1 Press the function key below Configure to select the Configure branch The LCD now displays Ld E...

Страница 31: ...he asynchronous DTE s communication software is configured for 10 bit character format for example 8 data bits no parity and 1 stop bit Make sure the DTE cable is attached to the DTE connector on the rear of the 391x Series modem and to the correct serial communications port on the asynchronous DTE Configure the modem for Async Dial Async Leased or UNIX Dial as described earlier in Using the DCP T...

Страница 32: ... NOTE Only F0 F3 F5 and F6 allow you to use AT commands after saving a factory configuration Any other selection removes AT command control The only way to return to AT command control is through the DCP as described in Using the DCP on page 2 6 Where n is one of the following storage areas 0 for Active Saved 1 for Customer 1 2 for Customer 2 NOTE These three configuration areas are nonvolatile me...

Страница 33: ... when it is removed from the carrier The Model 3911 is designed for installation in a COMSPHERE 3000 Series Carrier which supplies both the operating power and the leased and or dial network connections For additional information about the COMSPHERE 3000 Series Carrier refer to the COMSPHERE 3000 Series Carrier Installation Manual The COMSPHERE 3000 Series Carrier has 17 slots which can hold up to...

Страница 34: ...3 If the carrier is ON the Power LED on the faceplate of the 3911 lights After several seconds the modem completes its power up self test in which all faceplate LEDs light Return to the rear of the carrier and tighten the rear connector plate If the modem is to communicate with an installed SDCP install the modem as described above and perform the following steps 1 Press the Select key on the SDCP...

Страница 35: ...e OK LED on the SDCP light 6 Once you have determined that the modem is installed properly and completed its power up self test rotate the circuit pack lock until it covers the faceplate latch Figure 2 3 and tighten the retention screw on the circuit pack lock This prevents the modem from accidently being removed once it is installed in a carrier 7 Configure the modem as described in Selecting Fac...

Страница 36: ...d strap when handling the modem Always store the Model 3911 in an antistatic bag when it is removed from the carrier It is not necessary to power down the carrier to remove and replace a Model 3911 modem Perform the following steps 1 Rotate the circuit pack lock until the release tab is exposed 2 Press down on the release tab and pull the modem away from the carrier s backplane ...

Страница 37: ...anel SDCP an optional feature used with the Model 3911 installed into a COMSPHERE 3000 Series Carrier Both DCPs have a two line 32 character liquid crystal display LCD and keypad through which Top Level menu branches are accessed to perform the following Check modem status Set up configuration options Initiate diagnostic tests Initiate and disconnect dial operations Access remote modems through th...

Страница 38: ... 108 142 COMSPHERE 3910 496 14174 01 F1 F2 F3 SQ RTS DTR 104 DIAG DIAL Figure 3 1 Model 3910 DCP Model 3911 Faceplate and Shared Diagnostic Control Panel SDCP The shared diagnostic control panel SDCP Figure 3 2 is used to manage carrier mounted Model 3911 modems The faceplate of the Model 3911 contains status indicators that monitor the operation of the modem After the SDCP is connected to the mod...

Страница 39: ...el 3911 s faceplate the SDCP and the SDU faceplate Figure 3 2 Select SDU 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 COMSPHERE 3000 SELECT KEY STATUS INDICATORS CARRIER SLOTS 1 16 F1 F2 F3 OK Alarm BckUp Test EC NETWORK DEVICE ALARM DIAL BACKUP TEST MODE ERROR CORRECTION OK Alarm BckUp Test EC KEYPAD LCD 496 14175 01 OK Alrm In Out Status SDU Diag Diag TXD RXD RTS CTS DSR DTR LSD 103 104 105 106 107 10...

Страница 40: ...m is attempting to establish a call over the dial network or the modem is in Dial Standby mode ON The modem has established a dial connection OFF A dial connection does not exist RI 125 3911 only green A ringing signal is being received Busy 3911 only yellow The modem is placed in a forced busy condition and is off hook Serv 3911 only yellow The modem is connected to the carrier service line rathe...

Страница 41: ...ellow The modem is involved in a test Normal operation is not possible EC green The modem is in Error Control mode Diagnostic Control Panel Operation The 391x Series modem s diagnostic control panel DCP is the user interface to all functions used to configure and control the modem In addition to the status LEDs this interface includes the liquid crystal display LCD and keypad Figure 3 3 F1 Leased ...

Страница 42: ...roll indicator appears when more choices are available to the left and right of what is currently displayed on the LCD Left Scroll Indicator The left scroll indicator appears when more choices are available to the left of what is currently displayed on the LCD Other Indicators Other indicators may turn on depending on existing conditions such as error detection informational alerts and warnings Th...

Страница 43: ...omer 1 or Customer 2 configuration areas Key The key moves you up one level in the menu tree and Keys Use the and keys to move the viewing window left or right and to scroll the remaining branches and selections into view A maximum of three selections can be displayed at one time These keys also allow you to move the cursor one character to the left or right on data entry displays for example to a...

Страница 44: ...begin and end various modem tests SubHS Sub Network Health and Status Used to display alarm conditions in downstream modems Call Setup Used to dial disconnect and answer telephone calls as well as store up to 24 telephone numbers in directory locations Talk Data Used to switch the modem between Talk mode the modem is disconnected from the VF line and Data mode the modem is connected to the VF line...

Страница 45: ...trol compatible between both modems Once a level is selected this LCD message disappears Dial Backup or L d B k Standby MR The modem is operating in Dial Standby mode p Leased Backup DialBckUp MR The modem is operating in Dial Backup mode at the displayed data rate and is configured for Direct mode Backup MR EC The modem is operating in Dial Backup mode and is configured for error control and data...

Страница 46: ... was detected Trunk Busy The modem is receiving a fast trunk busy Wrong Call The call was answered but not by a modem No answer tone MR Modem Rate indicates the data rate the modem is using One of the following values appears 300 1200 2400 4800 7200 9600 12 0 12 000 14 4 14 400 16 8 16 800 or 19 2 19 200 bps EC Error Control indicates the modem is online and using V 42 or MNP error control One of ...

Страница 47: ...has disconnected due to a lack of transmitted and received data Disconnecting The modem has begun the disconnect sequence RmtCmnded Disc The modem has disconnected due to a V 32 Cleardown received from the remote modem Talk Mode The modem is in Talk mode Firmware Download Result DownldOnly Mode A local download of firmware or a remote cloning of firmware has failed The modem is currently in a Down...

Страница 48: ...wed time limit was exceeded before the modem received a VF password from the originating dialer Unknown DTEpswd The modem did not finish answering a call disconnected because the DTE passwords received from the remote DTE were invalid No Orig PsWd The modem did not attempt to establish a call as requested because the AT dial command did not contain an originate access password Unknown VF PsWd The ...

Страница 49: ...Talk Data Security and Remote These branches are described in detail in Chapters 4 through 13 Quick Configuration Display The Quick Configuration display indicates the basic operational characteristics of the modem F1 Leased 19 2 Status Configure F2 F3 To access the Quick Configuration display from the Top Level display press the key F1 Leased 19 2 abbb cdd ee ffff F2 F3 ...

Страница 50: ...nate mode and D indicates Dial mode ee Displays the modem DTE port that is currently being displayed by the EIA status indicators on the DCP P1 indicates Port 1 CC indicates Control Channel DC indicates Diagnostic Channel ffff Displays the modem s modulation scheme as shown below V32t indicates V 32 terbo modulation V32b indicates V 32bis modulation V32 indicates V 32 modulation TMp indicates Trel...

Страница 51: ...ata Security Remote Status DeviceHS VF Identity DTE Options Record Major Minor Status Dial Thresh Security Port1 SigQual1 RcvLevel1 2 Sig Noise1 2 NrEchLvl1 FarEchLvl1 FarEchDel1 EchoFreqOff1 NonLnearDist2 Retrains2 Ser Mod FRev HPt FPt LSD DTR DSR Tst TXD RXD RTS CTS Display Clear Status 1 These parameters appear for V 32 terbo V 32bis and V 32 modulations 2 These parameters appear for Trellis Mu...

Страница 52: ...which are active at the time the DeviceHS function is selected To access DeviceHS from the Status branch make the following selection F1 Status DeviceHS VF F2 F3 Select DeviceHS F1 Device HS Major Minor F2 F3 If alarms are present press the appropriate function key to view the messages associated with these alarms Table 4 1 If needed press the key to scroll to additional alarm types If no alarms a...

Страница 53: ...t rate is below the configured rate Refer to Leased Line and Dial Line in Chapter 5 DCP Configuration for a description of configuration options affecting rate Status Subtree Truncate Downstream health and status information has been truncated because it overflowed system limits There is a large amount of health and status information in the subnetwork This information can be recovered by sending ...

Страница 54: ...hreshold Security Database Reset The security database has been reset passwords erased y Password Protect Security password protection has been enabled Mode Change There has been a change in security mode Refer to Chapter 12 Dial Access Security Password Change A security password has been changed Database Change The security database containing passwords has been changed Port 1 Rx Data Alarm The ...

Страница 55: ...al This value appears for V 32 terbo V 32bis V 32 and Trellis Multipoint modulations Sig Noise Signal to Noise Ratio displays in decibels the receive signal strength relative to noise on the line This value appears for V 32 terbo V 32bis V 32 and Trellis Multipoint modulations NrEchLvl Near End Echo Level displays the signal level in decibels referenced to one milliwatt dBm of that portion of the ...

Страница 56: ...g firmware upgrades To access Identity from the Status branch make the following selection F1 Status VF Identity F2 F3 Press the key until Identity appears Select Identity F1 Status Identity Ser 00000000 F2 F3 The modem s serial number appears on the LCD s bottom line Press the key to scroll and view the model number firmware revision level hardware part number and firmware part number Ser Serial ...

Страница 57: ...asterisk indicates at least one transition while a blank space indicates no transitions The second symbol indicates the state of the interface lead at the sampling time A solid block indicates a Space or ON condition while an underscore _ indicates a Mark or OFF condition To exit this function and remain in the Status branch press the key To exit and return to the Top Level menu press the key Back...

Страница 58: ...lay the next screen F1 Status Backup Bkup 2wAPL Good F2 F3 This screen displays the configuration and condition of the inactive line facility either APL primary or backup There are four condition codes Good Bad and blank Table 4 2 provides information about the Status Backup screens The first column lists all possible configurations for the modem s currently active line The second column lists all...

Страница 59: ...XX or Pri 2w APL XXXX Good indicates the line condition is good Bad indicates the line condition is bad indicates the line condition is unknown Lease Lookback has not had enough time to make an initial appraisal of the line conditions since the last retrain blank indicates the Lease Loopback option is disabled Line Dial Only No second screen display NOTE When the modem is configured for Dial Only ...

Страница 60: ...w To exit this function and remain in the Status branch press the key To exit and return to the Top Level menu press the key Record Record is a troubleshooting tool used by the end user in conjunction with support personnel This function allows the end user to retrieve and report any sequence faults to support personnel A sequence fault is an irregular or unexpected event There are two selections ...

Страница 61: ...lt field Sequence fault fields range from 1 to 8 and are identified by a number in the upper right corner Press the key to view the remaining fields The message Modem O K appears if no sequence faults have occurred To remove sequence fault records from both the LCD and nonvolatile memory select Clear The message Modem O K appears To exit this function and remain in the Status branch press the key ...

Страница 62: ...COMSPHERE 3900 Series Modems 4 12 September 1998 3910 A2 GN32 40 This page intentionally left blank ...

Страница 63: ...to any configuration options In the event of a power cycle or reset the modem retrieves these settings from nonvolatile memory Customer 1 and Customer 2 are two additional read and write changeable configuration areas where you can create and store additional configurations for specific applications Factory is a read only unchangeable configuration area containing six sets of predefined configurat...

Страница 64: ...IED TO Active Operating WHEN A SAVE IS COMMANDED VIA THE DCP ON A RESET OR ON POWER UP Active Operating Active Saved Customer1 Customer2 Factory EDIT AREA ALLOWS YOU TO VIEW AND EDIT CONFIGURATION OPTIONS ANY CHANGES MADE TO CONFIGURATION OPTIONS ARE SAVED TO Active Saved Customer1 OR Customer2 Load Edit Area From S Sync Leased Answer Originate S Async Leased Answer Originate S TMp Control Trib S ...

Страница 65: ...Mp Control AT F7 S Async Dial AT F0 S Sync Dial AT F1 S Sync Leased Originate AT F4 S Async Leased Originate AT F6 S TMp Trib AT F8 S UNIX Dial AT F3 NOTE ON POWER UP Active Saved IS LOADED TO Active Operating Active Operating CHANGES MADE USING ANY AT COMMAND IMMEDIATELY AFFECT MODEM OPERATION Active Saved AT W0 Customer1 AT W1 Customer2 AT W2 NOTE THE AT W COMMAND IS DISABLED IF THE Straps When ...

Страница 66: ...oss various levels of the Configure branch Status Status PList Control Test SubHS Call_Setup Tlk Data Security Remote Configure Ld EditArea frm Activ Operating Active Saved Customer1 Customer2 Factory Choose Function Sync_Leased Async_Leased TMp Sync_Dial UNIX_Dial Async_Dial Choose Mode Control Trib Choose Mode Edit StrapGroup Answer Originate Save Active Saved Customer1 Customer2 DTE_Interface L...

Страница 67: ...g this branch Editing and Saving a Configuration Option The following example shows how to change the Remote Access Password using the DCP If you intend to access another 3900 Series modem via the Remote branch of the Top Level menu the Remote Access Password must be the same for both modems By following these procedures you learn how to load a factory preset configuration area in this case Sync L...

Страница 68: ...t Sync_Leased F2 F3 Select Sync_Leased F1 Choose Mode Answer Originate F2 F3 Select Answer F1 Choose Function Edit Save F2 F3 Select Edit F1 Edit StrapGroup DTE_Interface F2 F3 F1 Edit StrapGroup Test Misc F2 F3 Scroll across the LCD and select the Misc configuration options group ...

Страница 69: ...F3 Select Nxt until RemAccssPasswrd appears F1 RemAccssPasswrd Nxt 10000000 F2 F3 Select the F2 key to increment password values F1 RemAccssPasswrd Nxt 10000000 F2 F3 Press the key to move the cursor to the next position F1 RemAccssPasswrd Nxt 12345678 F2 F3 Continue this sequence until you have entered the new password value ...

Страница 70: ...crolling down to the next configuration option Second it indicates that what is displayed on the LCD is the current setting If you scroll left or right Nxt disappears and reappears if a new value is selected End appears when you have scrolled down to the last configuration option available in that group Selecting End returns you to the top of the configuration group You are free to enter that grou...

Страница 71: ...ation options is restricted The modem will accept any selection but it will set the configuration option to the closest legal value The actual value that is accepted by the modem is displayed when the F2 key is pressed to enter a selection DTE Interface The DTE Interface configuration options contain EIA 232 D ITU T V 24 and asynchronous character format information essential for maintaining a con...

Страница 72: ...ired and the RS232 cable length must be minimized to reduce capacitance NOTE To configure the Async DTE Rate different than the modem rate ensure that the Error Control Mode configuration option see the V 42 MNP Buffer section is set to BufferMode The AT prefix determines Async DTE Rate Asyn Data Bits 8 Nxt 8 7 9 DirectMde 6 DirectMde This configuration option only appears if Async Sync Mode is co...

Страница 73: ...the DTE Dialer Type configuration option is set to AT or V 25bis Async then the total character size must equal 10 bits Total character size consists of start data parity and stop bits V 25bis Async must use 7 data bits with even parity and 1 stop bit The total character size for Error Control mode Direct mode or Buffer mode must be 11 bits or less The AT prefix determines parity of the async char...

Страница 74: ...e during an active call until DTR is lowered by the attached DTE This setting is ignored if the modem is commanded to disconnect from its own front panel or by the COMSPHERE 6700 Series Network Management System H Controls Transmitter Mute Mutes the transmitter whenever DTR drops on the DTE interface This selection can be used on the answer side modem to force the originate modem to initiate a dia...

Страница 75: ...SR to always be ON H Wink When Disconnect DSR is normally forced ON but is turned OFF for 1 to 2 seconds upon a disconnect H Follows DTR When the modem receives DTR from the DTE it sends DSR to the DTE H On Early DSR is low when the modem is in the idle state DSR goes high immediately upon a command to enter Data mode This setting is required for some modem pooling applications H Delay to Data Ope...

Страница 76: ...carrier is present on the VF line When RTS turns OFF carrier is not present This is only valid for V 29 and V 27bis leased line modulations Auto Dial Backup is always disabled for this setting The AT command for Standard RS232 is R0 The AT command for Ignore is R1 The AT command for Simulated Control Carrier is R2 The AT command for Control Carrier is R3 RTS Antistream 10sec Nxt 10sec Disable 30se...

Страница 77: ... the state of DTR When DTR turns ON CTS turns ON When DTR turns OFF CTS turns OFF H Follows RTS The state of CTS follows the state of RTS When RTS turns ON CTS turns ON When RTS turns OFF CTS turns OFF NOTE When CTS flow control or CTS RTS flow control is enabled CTS will turn ON and OFF regardless of the setting of CTS Control The AT command for Forced On is D0 The AT command for Standard RS232 i...

Страница 78: ...R When DTR turns ON LSD turns ON When DTR turns OFF LSD turns OFF H Simulated Control Carrier LSD follows the state of RTS of the remote DTE via the V 13 simulated control carrier signaling This is required for hosts that cannot support full duplex operation If LSD Control is set to simulated control carrier then the RTS Action configuration option on the remote modem must be set to Simulated Cont...

Страница 79: ...ich the Dual_Leased_Ln is configured for Enable and Async Sync Mode is Sync Backup Transmit Clock Source Selects the clock reference source when operating in the Dual Leased Line Mode This is a special mode in which one leased line is used to back up another H Internal The transmit data s clock source is derived from the modem s internal clock This clock is available as an output on Pin 15 TXC of ...

Страница 80: ...tes while remaining in the same modulation scheme When CT111 turns ON the modem returns to its previous data rate NOTE This configuration option is only valid in Async Direct mode and Synchronous mode For proper operation disable the V 32bis Autorate and V 32bis Automode configuration options The AT command is S Register S61 n where n is 0 for Disable 1 for Fallback1 and 2 for Fallback2 DTE_Rate V...

Страница 81: ... Port1 Port2 Port3 Port4 Port5 Port6 Port7 Port8 This configuration option only appears on a control modem when the Extended Main Channel is enabled Upstream Port When an extended control modem s main primary channel is connected to a tributary modem that is one link above it in the diagnostic network this configuration option is set to the port number to which it is connected on the tributary mod...

Страница 82: ... 1 stop bit If the modem is in Asynchronous mode enter the following command string to configure it for V 25bis Bsync dialing AT F D1 S1 M233 W If the modem is already configured for synchronous operation perform the following to set the character format 1 use the modem s front panel to access the Async Sync Mode configuration option and set it to Async 2 scroll down until the Asyn Data Bits confi...

Страница 83: ...only appears if DTE Dialer Type is configured for AT Escape Guard Time Determines the length of the required pause before and after the escape sequence is issued The guard time prevents the modem from interpreting data as the escape sequence characters The AT command is S Register S12 n where n is a value from 0 to 255 in 20 millisecond increments BreakForceEscap Disable Nxt Disable Enable This co...

Страница 84: ...DTE Dialer Type is configured for AT Line Feed Character Sets the character used to perform a line feed in Command mode for responses from the modem The AT command is S Register S4 n where n is a value from 0 to 127 Result Codes Enable Nxt Enable Disable EnableInOrig This configuration option only appears if DTE Dialer Type is configured for AT Result Codes Result codes are informational messages ...

Страница 85: ... is used For example CONNECT 9600 V42b H Use DTE Rate Allows the DTE rate to be displayed in the Connect message instead of the line rate This feature is required in some modem pooling applications NOTE NO DIALTONE is valid only if Dial Tone Detect configuration option is enabled BUSY appears if Busy Detect configuration option is enabled The AT command for Disable is X0 The AT commands for Enable...

Страница 86: ...ation option affects AT commands it cannot be changed by the AT F command However it can be changed by selecting a factory preset configuration via the DCP The AT command is S Register S84 n where n is 0 or 231 for Normal 1 or 232 for No ERROR and 2 or 233 for No Strap or ERROR V25bis Coding ASCII Nxt ASCII EBCDIC This configuration option only appears if DTE Dialer is configured for V 25bis HDLC ...

Страница 87: ...ta Branch for more on Manual Answer NOTE Although DCP selections are limited 1 2 4 6 8 or 10 values set by AT commands can display from 1 to 255 rings NOTE The range of allowable values may be restricted in some countries The AT command for Disable is S0 0 The AT command is S Register S0 n where n is a ring count from 1 to 255 Dialer Type Tone Nxt Tone Pulse Dialer Type Selects either tone DTMF di...

Страница 88: ...on can be disabled and the modem ignores all busy tones The AT commands for Disable are X0 X1 and X2 The AT commands for Enable are X3 X4 X5 X6 and X7 Pause Time 2sec Nxt 2sec 4sec 6sec 8sec 10sec 20sec Pause Time Determines the number of seconds the modem pauses when it encounters a comma in the dial command string NOTE Although DCP selections are limited 2 4 6 8 10 or 20 values set by the AT com...

Страница 89: ...urrent Disconnect Determines the modem s response to short interruptions of line current The loss of line current is one method of disconnecting a call H Enable 8 millisecond Disconnects the modems if line current is disrupted for more than 8 milliseconds H Enable 90 millisecond Disconnects the modems if line current is disrupted for more than 90 milliseconds Use this setting if the modem constant...

Страница 90: ... transmitted and received within a specified amount of time H Disable Modem remains connected despite the lack of data flow H 10 30 60 min Modem disconnects if data is not received and transmitted within 10 minute 30 minute or 60 minute intervals NOTE The factory default value is country dependent The AT command for Enable is Tn where n is from 1 minute to 255 minutes The AT command for Disable is...

Страница 91: ... normally keeps DTR ON and turns DTR OFF when the DTE cannot accept a call NOTE This configuration option should only be used when the modem is located behind a user s Private Branch Exchange PBX For 3911 modems the Make Busy Network Interface Modules NIMs must be installed on the COMSPHERE 3000 Series Carrier Refer to the COMSPHERE 3000 Series Carrier Installation Manual The AT command is S Regis...

Страница 92: ...ion option determines the modem s data rate and modulation scheme for operation on dial lines Online changes do not take effect until a disconnect occurs NOTE Certain changes to this configuration option will cause the modem to reset H 19200 V32t 16800 V32t 14400 V32b 12000 V32b 9600 V32b 7200 V32b 4800 V32b The modem operates using V 32 terbo V 32bis or V 32 modulation at the data rate selected H...

Страница 93: ...data rate the line can support This autorating only occurs between 19 200 bps and 4800 bps during V 32 V 32bis V 32 terbo connections H Start at 48 and Start at 96 Set the maximum connect rate for V 32 V 32bis V 32 terbo connections The AT command is S Register S76 n where n is 0 for Enable 1 for Disable 2 for Start at 48 and 3 for Start at 96 V32bis Override Disable Nxt Disable 2400 1200 This con...

Страница 94: ... AT command for Disable is G0 The AT command for 550 Hz is G1 The AT command for 1800 Hz is G2 V32bis Train Long End Long Short This configuration option only appears when Dial Line Rate is configured for V 32 terbo V 32bis or V 32 data rate V 32bis Train Controls V 32 terbo V 32bis V 32 train time Determines whether minimum or maximum time durations are used during the V 32 terbo V 32bis V 32 han...

Страница 95: ...Leased Line Configuration Options Leased Mode 4WLL Ans Nxt 4WLL Ans 4WLL Orig 2WLL Orig 2WLL Ans Leased Mode Sets the modem for either 2 wire or 4 wire operation in Answer mode receiving a call or 2 wire or 4 wire operation in Originate initiating a call mode NOTE For proper operation of V 32 modulations over leased lines one modem must be set to Originate mode and the other set to Answer mode For...

Страница 96: ...ributaries at 14 4 or 9 6 kbps control at 9 6 kbps tributaries at 9 6 or 7 2 kbps control at 7 2 kbps tributaries at 7 2 or 4 8 kbps control at 4 8 kbps tributaries at 4 8 or 2 4 kbps control at 2 4 kbps tributaries at 2 4 kbps Tributary rates will never exceed control rates If tributary and control rates are equal reducing the control rate automatically reduces the tributary rate H 2400 V22bis Th...

Страница 97: ... power level over leased lines The transmit output level can be selected in 1 dBm decrements from 0 dBm to 15 dBm NOTE The leased TX level is limited to 1 dBm in all countries except North America The AT command is S Register S45 n where n is from 0 to 15 corresponding to 0 dBm to 15 dBm Auto Dial Back Disable Nxt Disable Enable Circular This configuration option is not available if the LeaseLine ...

Страница 98: ...igured for Originate mode or if Automatic Dial Standby is configured for Adv15min Adv30min Adv1hr or TestAdv 2min Special Standby Used to support Automatic Dial Standby configurations when a third modem is used for the dial backup When the leased line is restored the Special Standby configuration allows the leased line modems to return service to the original point to point modems NOTE When the mo...

Страница 99: ... command is S Register S93 n where n is 0 for Enable and 1 for Disable V29 Link Config PointToPoint Nxt PointToPoint Multipoint This configuration option is only available if Leased Line Rate is configured for V29 V 29 Link Configuration Selects point to point or multipoint operation NOTE Remote mode and the Cloning function are not available when configured for V 29 Multipoint The AT command is S...

Страница 100: ...l Leased Line device option is installed Backup Line Check Tests the backup circuit for availability while the modem is operating on the primary leased lines The test involves detecting line energy across the normal bandwidth This test of the backup lines will not interrupt the data flow on the primary lines The configuration option settings must be the same at both ends NOTE In network applicatio...

Страница 101: ...r Buffer Modem attempts to connect in MNP mode If this fails the modem connects in Buffer mode This is also known as MNP Autoreliable Mode H MNP or Disconnect Modem attempts to connect in MNP mode If this fails the modem disconnects This is also known as Reliable mode H Buffer Mode Modem does not use error control and allows the DTE rate to differ from the communications line rate This mode should...

Страница 102: ...red for V42 MNPorBfr or V42 MNPorDsc V 42bis Data Compression Enables or disables V 42bis data compression H Enable Data compression operates in both the transmit and receive directions This is the recommended setting for all applications H Disable V 42bis data compression is disabled This is rarely needed because V 42bis data compression does not cause data expansion for compressed data The AT co...

Страница 103: ...e However when the modem receives an error control fallback character it switches to Buffer mode Refer to the EC Fallback Char configuration option The AT command for Disable is C0 The AT command for Enable is C1 The AT command for Disab Switch is C2 EC Fallbck Char 013 ASCI Nxt 013 ASCI This configuration option is only available if Async Sync Mode is configured for Async and EC Negotiate Buffer ...

Страница 104: ...op the flow of data The AT commands for Disable are Q0 Q5 and Q6 The AT commands for XON XOFF are Q1 and Q4 The AT commands for CTS to DTE are Q2 and Q3 Flw Cntl of Mdm RTS_to_Mdm Nxt RTS_to_Mdm Disable XON XOFF This configuration option is only available if Async Sync Mode is configured for Async and Error Control Mode is not configured for DirectMode Flow Control of Modem Determines how the DTE ...

Страница 105: ...ntrol Mode is configured for V42 MNPorBfr MNP_or_Buffr LAPM_or_Bufr or BufferMode Modem to Modem Flow Control If a modem s buffers begin to fill due to data it is receiving from the remote modem but is not passing on to the DTE it can issue XON XOFF flow control characters to the remote modem This only applies if Buffer nonerror control mode is selected If Error Control mode is enabled flow contro...

Страница 106: ...TE Dialer configuration options group is enabled The AT commands for Discard Data are K0 and K1 The AT commands for Keep Data are K2 K3 K4 and K5 Send Break Cntl Data_First End Data_First Break_First This configuration option is only available if Async Sync Mode is configured for Async and Error Control Mode is not configured for DirectMode Send Break Control Determines what is sent from the modem...

Страница 107: ...ts Max Frame Size 256 Nxt 256 192 128 64 32 16 This configuration option is only available if Async Sync Mode is configured for Async and Error Control Mode is not configured for BufferMode or DirectMode Maximum Frame Size Sets the maximum frame size for V 42 and MNP For V 42 operation 128 is the maximum value Any value which exceeds this will automatically default to 128 for V 42 For MNP operatio...

Страница 108: ...remote loopback An Abort command or test timeout ends this test This configuration option is not available if the LeasedLine Rate is configured for TMp H Enable The DTE forces the modem into remote loopback when the signal on Pin 21 ITU T 140 is turned ON Remote Loop ends when the signal is dropped H Disable The DTE does not initiate remote loopback in response to the signal on Pin 21 The AT comma...

Страница 109: ...local analog loopback This type of addressing is recommended for use in extended data circuits tail circuits H Disable This is used for normal point to point leased line and dial networks H Address Values 01 03 05 07 09 0B 0D 0F 11 13 15 17 19 1B 1D 1F 25 27 2B 2D 2F 33 35 37 3B 3D 3F 55 57 5B 5F 6F 77 or 7F This configuration option selects the address of a modem that is to be placed into a loopb...

Страница 110: ...he Active Operating configuration area which controls modem operation is reloaded from the Active Saved configuration area when a disconnect occurs This is useful in modem pooling applications where it is desirable to start the modem from a known condition after every call This allows multiple users to issue AT commands to change the modem s operation for their particular call NOTE If Reload is se...

Страница 111: ...Remote Access Password Allows the entry of a password for establishing control of a remote modem from the DCP of a local modem The same password must be used in both the local and remote modem CAUTION A remote access password should be selected for security purposes NOTE If the Access from Remote configuration option is set to Disable the password has no effect The AT command equivalent is S Regis...

Страница 112: ...ect Progress 1 for Disable 2 for Call Connect Only and 3 for Call Progress Only NetworkPosition Tributary End Tributary Control Network Position Identification Each modem must be identified either as a control modem or a tributary modem NOTE Changes to this configuration option will cause the modem to reset NOTE This configuration option is only applicable for leased line network management applic...

Страница 113: ...No Nxt No Yes This configuration option is only available if the LeasedLine Rate is configured for TMp Control Mixed Tributary Firmware Establishes that a multipoint network has TMp tributary modems using firmware prior to Release G02 60 xx H No Multipoint network modems do not have mixed firmware H Yes Multipoint network modems do have mixed firmware Link Delay sec 0 1 Nxt 0 1 2 5 10 20 50 Link D...

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Страница 115: ...ranch of the Top Level menu allows you to identify downstream modems in order to support health and status polling and download broadcasting The maximum number of devices is 16 on the secondary channel and 64 on the diagnostic channel Status Status Configure Control Test SubHS Call_Setup Tlk Data Security Remote PList Tributary only Display Clear Change Add Acquire Active Delete Skip 6 ...

Страница 116: ...uration option Over a diagnostic channel a tributary modem can communicate with control modems by using the control modem s network management address for polling functions In the poll list modems may be listed as either Active or Skip Modems in the Active poll list are polled by the upstream modem Modems in the Skip poll list are passed over during the polling process but they are not deleted fro...

Страница 117: ...he Top Level menu press the key Clear The Clear function does not appear in Remote mode Clear deletes the modem s poll list To access Clear from the PList branch make the following selection F1 Poll List Display Clear F2 F3 Select Clear The message Command Complete appears on the second line of the LCD to indicate that the poll list has been cleared To exit this function and remain in the PList br...

Страница 118: ...rsor _ under the digit that will be incremented Press the F2 key to increment the digit Press Enter Ent to implement the function yyyyyy you selected Active Delete or Skip The message Command Complete appears on the second line of the LCD to indicate that the poll list change has occurred If the message Poll List Check appears you have attempted to delete an address that was not on the poll list o...

Страница 119: ...Add Command Complete F2 F3 The message Command Complete appears on the LCD to indicate that the tributary modem will be added to the control modem s poll list To exit this function and remain in the PList branch press the key To exit and return to the Top Level menu press the key Acquire The Acquire function does not appear in Remote mode Acquire allows you to acquire an active poll list consistin...

Страница 120: ...F3 The address field xxx increments sequentially from 001 to 256 as polls are transmitted from the modem to the downstream modem s To be added to the modem s poll list the device must respond to a poll after receiving its address The Acquire function can be canceled by selecting Abort The number field yyy indicates the total number of devices that responded to the modem s polls These devices have ...

Страница 121: ...and software functions such as speaker volume reset busy out and firmware download Control Status Status Configure PList Test SubHS Call_Setup Tlk Data Security Remote Speaker Reset Data_Stream Make_Busy or RemoveMakeBusy Service_Line or DiscServiceLine Download_Code DownLoadSoftware 3911 only VF_Thresh_Update EIA_LEDs 3910 only 7 ...

Страница 122: ...ngs refer to Misc in Chapter 5 DCP Configuration To access Speaker from the Control branch make the following selection F1 Control Speaker Reset F2 F3 Select Speaker F1 Speaker Control Off Low Med F2 F3 Press the key and appropriate function keys to choose the desired selection DCP selections are Off Turns the speaker off Low Adjusts the speaker to low volume Med Adjusts the speaker to medium volu...

Страница 123: ...pears momentarily before the modem performs the power up diagnostic test sequence Data Stream The Data Stream function is not available in Async mode Use Data Stream to enable or disable the modem s data transmitter function To access Data Stream from the Control branch make the following selections F1 Control Data_Stream F2 F3 Press the key until Data_Stream appears Select Data_Stream The Data St...

Страница 124: ...e front panel EIA LEDs to display the activity of a selected digital interface To access EIA LEDs from the Control branch make the following selections F1 Control EIA_LEDs F2 F3 Press the key until EIA_LEDs appears Select EIA_LEDs F1 EIA_LED xxxxx Port1 CC F2 F3 Press the F1 key until the appropriate digital interface appears The xxxxx field displays the currently selected interface The valid inte...

Страница 125: ...e entire EIA LEDs branch is masked Make Busy Remove Make Busy The Make Busy function forces the modem off hook so it cannot answer a call This is often used with PBX systems to permit the busy out of a PBX port for rotary or hunt groups WARNING To prevent violations of FCC and DOC regulations this function must only be used behind a user s PBX To access Make Busy from the Control branch make the f...

Страница 126: ...nector of one Network Interface Module NIM to the service line of another NIM installed in the same carrier you can permit all 16 modems to share one service line The service line can also be extended to other carriers in a cabinet For more information regarding daisy chaining of modems to the service line refer to the COMSPHERE 3000 Series Carrier Installation Manual A service line is ideal for a...

Страница 127: ...e LCD is To Local via DTE This function permits firmware upgrades to be transferred to a 391x Series modem This type of download requires a locally attached PC controller to be connected to the modem s DTE port as well as special download software Any downloads using this selection are intended to be performed by customer service personnel only Selecting Clone Remote NOTE Clone Remote operations a...

Страница 128: ...ch follows the descriptions of multipoint cloning operations Clone Remote in Broadcast Configurations A tributary modem configured for extended diagnostics Diagnostic Connection configuration option set to Modem DC can perform two types of Remote Clone operations It can clone the upstream VF connected control modem SC_Clone or it can clone all the 391x modems attached to its downstream Diagnostic ...

Страница 129: ... the network management address of one of the remote modems Pressing the F1 key allows you to select various remote modems to determine the download result for those modems Pass or Fail Clone Remote in Multipoint Configurations A Trellis Multipoint TMp control modem can be used to download firmware to just one tributary modem Single or to all of its tributary modems Multiple NOTE A Trellis Multipo...

Страница 130: ...lth and Status Branch Cloning a Single TMp Remote F1 Choose DLL Type Single Multiple F2 F3 Press the F1 key to select Single Clone Remote F1 Choose Address Ent xxx F2 F3 The address field xxx displays the network management address of the modem that will receive the download The valid address field range is from 001 to 256 To increment digits within the address field xxx use the and keys to positi...

Страница 131: ...ltiple TMp Clone Results F1 Choose DLL Type MPtCloneResults F2 F3 From the Choose DLL Type screen press the key until the MPtCloneResults screen appears to view the results of the last multiple TMp clone operation If the message Trib List Empty appears this indicates that a multiple download was never initiated F1 MPtCloneResults Nxt xxx Pass F2 F3 The address field xxx displays the network manage...

Страница 132: ...electing any function key This returns the modem to the DwnLoadSoftware menu However to continue with the transfer press the key to display the Reprogram_Remote selection F1 Warning Download Reprogram_Remote F2 F3 Press any function key to begin the transfer F1 RemClone Status Establish Remote F2 F3 The local modem s LCD displays Establish Remote indicating the modem is attempting to establish a R...

Страница 133: ...gle download applications if the download is successful the local modem displays Remote Clone OK and the remote modem displays Frmware Upgrade If the download took place over the dial network the modems disconnect when the download is complete If the Single download is unsuccessful RemClone Failed appears on the LCD s top line Attempt another download from the local modem If this fails contact you...

Страница 134: ...ing and saving a VF threshold is similar to editing and saving a configuration option For another example of editing and saving refer to Editing and Saving a Configuration Option in Chapter 5 DCP Configuration F1 RSL High dBm Nxt 09 F2 F3 In the example shown above 09 is the upper High RSL threshold in dBm To change the 09 to 10 make the following selections F1 RSL High dBm Nxt 19 F2 F3 r Select t...

Страница 135: ... 10 F2 F3 Press the key to scroll up to the Edit Save screen F1 VF Thresholds Edit Save Reset F2 F3 Select Save If the edited VF thresholds are valid the Save command stores them into nonvolatile memory When the Save completes the message Save Completed appears F1 Save VF Thresh Thd Out of Range F2 F3 If the edited VF threshold is invalid out of range the error message Thd Out of Range appears Thi...

Страница 136: ... exit this function and remain in the Control branch press the key To exit and return to the Top Level menu press the key Table 7 1 Valid Ranges for VF Thresholds VF Thresholds Valid Ranges Default Values Receive Signal Level High 0 dBm to 15 dBm Above 9 dBm Receive Signal Level Low 16 dBm to 50 dBm Below 23 dBm Signal to Noise Ratio 5 dB to 40 dB Below 23 dB Non Linear Distortion 15 dB to 50 dB B...

Страница 137: ...ck Rem Digital Loop Remote Digital Loopback Loc Digital Loop Local Digital Loopback and Pattern The only tests that can operate concurrently on a single modem are Pattern with a Local Analog Loopback and Pattern with a Remote Digital Loopback If any test is operating besides the two combinations just mentioned it must be canceled before starting another test The Test branch only initiates and canc...

Страница 138: ...ngs the modem back to the normal mode of operation Confirmation is provided by the Command Complete message To access Abort from the Test branch make the following selection F1 Test Abort Self F2 F3 Select Abort F1 Test Abort Command Complete F2 F3 The modem stops all tests currently in progress and displays the Command Complete status message on the LCD To exit this function and remain in the Tes...

Страница 139: ...and DCP status indicators light NOTE For tributary modems only the test is delayed 30 seconds to allow any outstanding network management messages to propagate upstream before the VF channel is interrupted by the test If the modem passes the self test Pass appears on the LCD If it fails Failed appears If the modem fails contact your service representative If Invalid Command appears on the LCD the ...

Страница 140: ...ct mode to perform this test otherwise Invalid Command appears Figure 8 1 Local Analog Loopback To access Loc Analog Loop from the Test branch make the following selections F1 Test Loc_Analog_Loop F2 F3 Press the key until Loc_Analog_Loop appears Press any function key to start this test F1 Test Local Loop Started F2 F3 NOTE For tributary modems only the test is delayed 30 seconds to allow any out...

Страница 141: ...e errors To exit this function and remain in the Test branch press the key To exit and return to the Top Level menu press the key Rem Digital Loop This test is not available when using TMp modulation or Remote mode Rem Digital Loop performs a remote digital loopback ITU T V 54 Loop 2 Figure 8 2 This test can verify the integrity of the local modem the communication link and the remote modem Any da...

Страница 142: ...on the Test Timeout configuration option refer to Test in Chapter 5 DCP Configuration To exit this function and remain in the Test branch press the key To exit and return to the Top Level menu press the key Loc Digital Loop Loc Digital Loop is issued by a local modem and forces it to loopback any data received from the remote modem Figure 8 3 This test operates the same as a ITU T V 54 Loop 2 exce...

Страница 143: ...ed For more information on the Test Timeout configuration option refer to Test in Chapter 5 DCP Configuration To exit this function and remain in the Test branch press the key To exit and return to the Top Level menu press the key Pattern Pattern can transmit and receive a 511 bit error rate test pattern It can also be used with a currently running local analog loopback or a remote digital loopbac...

Страница 144: ...5 Pattern Test and Digital Loopback Test Figure 8 6 End to End Pattern Test To access Pattern from the Test branch make the following selections F1 Test Pattern F2 F3 Press the key until Pattern appears Select Pattern to start this test F1 Test Pattern BlksErrd xxxxxxx F2 F3 ...

Страница 145: ... overflows Press the key to display BlksRcvd xxxxxxx number of blocks of data received The Pattern test can be exited and reentered without restarting the test The BlksErrd and BlksRcvd continue counting If the Test Timeout configuration option is enabled Test Timeout appears at the conclusion of the test If it is disabled the test operates until aborted For more information on the Test Timeout co...

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Страница 147: ...tary modems or with certain modulations V 29 V 33 V 22bis and V 27bis The SubHS branch of the Top Level menu allows you to display alarm conditions in downstream modems Status SubHS Status Configure Plist Control Test Call_Setup Tlk Data Security Remote To access the SubHS branch from the Top Level menu make the following selections F1 Leased 19 2 Test SubHS F2 F3 9 ...

Страница 148: ...ssage is updated every several seconds to display the latest status MAJOR MINOR and STATUS display Health and Status alarm conditions refer to Table 4 1 in the Device Health and Status DeviceHS section of Chapter 4 Status Branch for additional information UNKNWN appears when the modem does not recognize the downstream health and status information or device communication is not established Normal ...

Страница 149: ...he backup facility instead of the normal 2 wire dial line Plug the leased line into the jack labeled DIAL on the rear panel of the modem and enable the Dual_Leased_Ln configuration option Refer to Leased Line in Chapter 5 DCP Configuration for configuration options Except for dialing ring indication and call progression functions you control the backup function as if it were a normal dial backup C...

Страница 150: ...ge 10 6 for information on storing telephone numbers in directory locations For leased backup applications Dial allows you to switch to the backup leased line Any directory location may be used The remote modem cannot automatically answer the simulated call Use the Answer function of the remote modem in conjunction with the Dial function to manually switch to the backup leased line To access Dial ...

Страница 151: ...n Chapter 3 DCP Operation Disconnect For dial backup applications use this function when you want to disconnect an established call on a dial line For leased backup applications use this function to switch between the primary leased line and the backup leased line To access Disconnect from the Call Setup branch make the following selection F1 Call Setup Dial Disconnect F2 F3 Select Disconnect F1 D...

Страница 152: ...ation For leased backup applications Answer allows the modem to begin the handshaking process with the remote modem To access Answer from the Call Setup branch make the following selections F1 Call Setup Answer F2 F3 Press the key until Answer appears Select Answer F1 Answer Command Complete F2 F3 The modem goes off hook and attempts to establish a connection in Answer mode The Command Complete st...

Страница 153: ... problem occurs on the primary leased line the modems establish a connection over the backup network F1 Call Setup Dial Standby F2 F3 When this occurs Dial Standby appears on the LCD in the Call Setup menu branch If you select Dial Standby the modem switches back to the primary leased line while still maintaining the backup connection As a result Return_to_Dial appears on the LCD instead of Dial S...

Страница 154: ...n forces the modem to the backup network and the LCD displays the status message Command Complete Change Directory Change Directory allows you to enter or modify telephone numbers The modem has nonvolatile memory locations that allow you to store up to 24 telephone numbers Each directory location can accept up to 40 characters this includes the telephone number and dial command modifiers Any telep...

Страница 155: ...change an existing telephone number in any of the 24 directory locations follow the same procedures To add a telephone number to a directory location make the following selections F1 02 z Nxt F2 F3 Select Nxt until a blank directory appears on the LCD The cursor _ always appears in the first character position Select F2 or F3 until the desired character is selected This can be an alpha or numeric ...

Страница 156: ...e Line Dialer configuration option group or by the value held in S Register S8 W Wait for tone dial The modem waits for a second dial tone before processing the dial string This can be the initial dial tone or can be used when dialing through a tandem PBX R Reverse Dial mode Causes the originating modem to send out an answertone once it no longer detects ringback Ringback is the ring you hear at t...

Страница 157: ...cation can be No Number The directory location is empty Allowed The number in this directory location may be dialed at this time Delayed The number in this directory location may be dialed later Forbidden The number in this directory location may not be dialed Delayed and Forbidden only appear in certain countries When a number is delayed press the key to display the value of the delay in minutes ...

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Страница 159: ...Y cable to connect the phone line to both the modem and the telephone refer to Appendix C Pin Assignments This cable is not supplied with your modem On initial power up the modem is in Talk mode When in Talk mode the modem is disconnected and you are free to use the telephone When in Data mode the modem is connected and data can be transmitted or received This function is not available for Model 3...

Страница 160: ...using a telephone and the remote modem is configured for Auto Answer perform the following procedure F1 Idle 19 2 Tlk Data F2 F3 Press the key until Tlk Data appears Lift the attached handset and dial the telephone number of the remote modem When the remote modem answers it transmits an answer tone F1 Idle 19 2 Tlk Data F2 F3 When you hear this tone immediately select Tlk Data and hang up the hand...

Страница 161: ...st both decide when to place the modems into Data mode You must both select Tlk Data at approximately the same time and hang up the handset to begin the handshaking sequence If the handshake is successful the modems are in Data mode and OnLine appears on the LCD NOTE If the remote modem is not a 3900 Series modem then the remote user must consult that modem s operator s manual to perform a similar...

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Страница 163: ...ke advantage of this security feature you must create a database of passwords which are stored in the modem s nonvolatile memory The Model 3910 can store a maximum of 20 passwords while the Model 3911 can store up to 3000 passwords Control of security functions is established in the Security Configuration Options group which is located in the Configuration branch of the Top Level menu These areas ...

Страница 164: ... DTE side password entry or a combination of both VF Side Passwords VF side password entry occurs between modems prior to connecting Once the VF side password is entered no other user intervention is required since security negotiation is handled solely by the modems When the answering modem is configured for VF entry technique it goes off hook and transmits to the originating modem either a secon...

Страница 165: ...or s modem DTE Side Passwords DTE side password entry requires the originating user to supply a valid password via the DTE This method of password entry occurs after the modems training sequence but before normal connection The modems must be configured for asynchronous operation to use this type of security When using DTE side password entry the modems go through their normal training and error c...

Страница 166: ...ssword access Most of the functions within this branch are protected by an Administrative Password Once the correct password is entered these security functions display on the modem s LCD The two major functions that appear under the Security branch are Set Access Control and Reset Security Security Status Status Configure PList Control Test SubHS Call_Setup Tlk Data Remote Set_Access_Ctrl Reset_S...

Страница 167: ...be entered every time you access the Security branch This feature ships from the factory with the Administrative Password set to 00000000 Once the correct Administrative Password is entered the Edit Password Table Set Answer Security Set Originate Security and Set Administrative Password groups can be displayed on the LCD To enter your Administrative Password from Set_Access_Ctrl make the followin...

Страница 168: ...record A password s record is retrieved by entering its index The Edit Password Table group allows you to view and or change the modem s security database table To do this you must retrieve a password s records by selecting its index Refer to the Select Index section The Edit Password Table group consists of the following options Select Index Password Type Edit Password and Save Edit To access Edi...

Страница 169: ...vel menu If changes have been made and the or key is pressed then Save Edit appears on the LCD Table 12 1 describes the settings of the Edit Table Password group options Table 12 1 1 of 2 Edit Password Table Group Options PsWdType xxxx Nxt Cleared DTE_Entry VF_Entry VF_plus_DTE Password Type Indicates whether this index location is configured for VF side password DTE side password or both Cleared ...

Страница 170: ...nfigured for Cleared Edit Password Allows the password associated with this index to be changed H xxxx Indicates the current index location value H yyyyyyyy Indicates the current password value for this index If the Password Type is VF_Entry or VF_plus_DTE then the password value is an 8 digit decimal number H zzzzzz Indicates the current password value for this index If Password Type is configure...

Страница 171: ... function H No Answer Security Disables the dial access security feature H DTE Only The answering modem is enabled for security The originating user must supply a password when prompted NOTE A call attempt never enters data mode if the answering modem is configured for DTE_Only and the originating caller attempts to enter a password using only the VF side password entry technique NOTE In modem poo...

Страница 172: ...ty group option Table 12 3 Set Originate Security Group Options Set Orig Sec No_OrigSec EnaOrigSec Set Originate Security Controls the security protection for origination of calls when AT commands are used NOTE The originate password must be included in all AT dial command strings if this option is enabled If not included or incorrectly entered the message ERROR is returned to the DTE H No Origina...

Страница 173: ... by selecting Reset Security This restores the password to a known value but erases the contents of the modem s security database To change the Administrative Password make the following selections F1 Set Access Ctrl Set_Admin_PsWd F2 F3 Press until Set_Admin_PsWd appears Select Set_Admin_PsWd F1 Set Admin PsWd Ent 00000000 F2 F3 The Administrative Password appears Press the F2 key to increment pa...

Страница 174: ...ase table To Reset Security make the following selections F1 Security Reset_Security F2 F3 From the Security branch press until Reset_Security appears Select Reset_Security F1 Reset Security Abort_Sec_Reset F2 F3 To abort this function select Abort_Sec_Reset Nothing is erased and the LCD returns to the main security display F1 Reset Security Erase_All_Passwd F2 F3 To Reset Security press until Era...

Страница 175: ...odem requests a valid password from the originating modem for the valid password This configuration option is only used for VF side password entry and is not valid for DTE side password entry H 2nd Dial Tone Once the answering modem is off hook it generates a dial tone to the originating modem as a prompt for that modem s VF side password Second dial tone is represented by a W in the dial command ...

Страница 176: ...le The remote user is prompted for a User ID once the handshaking and error control negotiation if applicable are complete There is no equivalent AT command NMS_Reporting 00 Nxt 00 This configuration option does not appear if Answer Security Mode is configured for No_Answ_Sec NMS Reporting Only applicable when using network management Determines how and if security event information is reported to...

Страница 177: ...ed with the DTE_Only or VF_ _DTE settings Originate_Secur No_OrigSec End No_OrigSec Ena_Orig_Sec Originate Security Mode This configuration option is read only and cannot be changed from the Configuration branch The setting of this configuration option can only be changed in the Set Orig Sec group found in the Security branch H No Originate Security Disables originate security so that a modem can ...

Страница 178: ...4W12345678 or ATDP5551234T 12345678 Where ATD is the AT dial command P and T are Pulse dial and Tone DTMF dial modifiers 5551234 is the phone number W is the second dial tone dial modifiers is the wait for quiet answer dial modifiers 12345678 is the 8 digit password VF side passwords can be from 1 to 8 digits long and are restricted to decimal digits is the password terminator character NOTE While...

Страница 179: ... control panel DCP The following example describes how to enter an Originate Access security password TYPE ATD abc123 T9 8005551234 PRESS Enter Where ATD is the AT dial command T is the Tone DTMF dial modifier Percent is the start and stop dial string command interrupt characters the Originate Access password must be enclosed by these characters abc123 is the 6 alphanumeric character Originate Acc...

Страница 180: ...e AT command dial string Table 12 5 Security Database Table Using VF Side Passwords VF Password Only Index Password Type Assigned to 21 1 VF_Entry Denver office 31 12 VF_Entry Chicago office 41 1212 VF_Entry Dallas office 51 953246 VF_Entry Miami office modem 1 52 46958373 VF_Entry Miami office modem 2 61 32562682 VF_Entry Atlanta office Table 12 6 is an example of a database table with passwords ...

Страница 181: ...3 VF_plus_DTE Miami office modem 2 161 32562682 VF_Entry Atlanta office 1131 winter DTE_Entry User C Chicago office 1141 summer DTE_Entry User A Dallas office 1142 spring DTE_Entry User B Dallas office 1151 fall DTE_Entry User D Miami office 1152 z DTE_Entry User E Miami office 1153 3g8sX4 DTE_Entry User F Miami office Users in the Denver and Atlanta offices are connected to the DTE after entering...

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Страница 183: ...l Access Security To clear the dial access security alarm light from the modem s front panel do the following 3 Press the key to return to the Top Level menu 4 Press F1 to access the Status branch 5 Press F1 again to select DeviceHs 6 Press F3 to select Security 7 From the Security branch press F1 twenty 20 times The security alarm light clears ...

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Страница 185: ...m Any changes made to configuration options while using the Remote branch are not saved until you exit the Remote branch This function is only available when using either V 32terbo V 32bis V 32 TMp V 33 or V 29 modulation schemes Remote Status Status Configure Plist Control Test SubHS Call_Setup Tlk Data Security Choose Address TMp Control only Choose Password TMp only Not in TMp Trib Secondary Pr...

Страница 186: ...due to the higher data rate but it also interrupts data flow because primary data is stopped when Remote mode is active Once Remote mode is terminated the primary channel is automatically made available for data transmission Unlike primary channel communications the secondary channel operates at a slower data rate and does not interrupt data flow V 32terbo V 32bis V 32 and TMp are the only modulat...

Страница 187: ...rement the digit Press Enter Ent to select the modem that will be accessed by the Remote function For Trellis Multipoint TMp modems control or tributary you must specify the remote access password of the modem that will be accessed by the Remote function The following display does not appear in point to point modems F1 Choose Password Ent yyyyyyyy F2 F3 The password field yyyyyyyy displays the rem...

Страница 188: ...tup ExitRe m The Top Level menu of the remote 391x Series modem is similar to the local 391x Series modem with the following exceptions The Talk Data and Security branches do not appear Change Directory is the only function available under the Call Setup branch Local Analog Loop and Remote Digital Loop do not appear under the Test branch when using the secondary channel When using the primary chan...

Страница 189: ...nwanted knowledge of the DCP security access selections Use the DCP security access function to lock the DCP of any 391x Series modem and prevent unwanted user access Two options are available for this function Grant and Deny Grant allows any branch of the Top Level menu to be accessed from the DCP Deny only allows access to the Status branch of the Top Level menu All 391x Series modems are shippe...

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Страница 191: ...ceived between modems The modems remain in Data mode until the connection is broken or until they are forced into online Command mode using the escape sequence Switching Between Data Mode and Online Command Mode Sometimes it is necessary to change operating parameters while the modems are online The Escape Sequence allows you to toggle the modem between Data mode and online Command mode while main...

Страница 192: ...m will not recognize mixed case prefixes At or aT Commands can be entered one at a time or in strings Strings can have up to 40 characters after the AT prefix You can use spaces hyphens and parentheses as fillers to make the commands easier to read the modem ignores these fillers and they are not counted among the characters which make up the command string Commands must be entered on one line and...

Страница 193: ...00 bps 16 15 CONNECT 7200 Connection at 7200 bps 17 17 CONNECT 16800 Connection at 16 800 bps 19 19 CONNECT 300 Connection at 300 bps 20 10 CONNECT 2400 EC Connection at 2400 bps with error control 21 11 CONNECT 4800 EC Connection at 4800 bps with error control 22 12 CONNECT 4800 EC Connection at 4800 bps with error control 23 16 CONNECT 12000 EC Connection at 12 000 bps with error control 24 13 C...

Страница 194: ...rs AT Command List AT commands are issued from an asynchronous DTE such as a PC and control the modem s operation and software configuration AT commands are only applicable when the DTE Dialer Type configuration option is set for AT Refer to the Mn and Qn commands Table 14 2 lists all AT commands supported by the 391x Series modem The first column lists the AT command The second column defines and...

Страница 195: ...aled in Pulse Dial mode NOTE Once a dialing method tone or pulse has been specified it will only remain active until the end of that dial string The modem defaults to the value set by the Dialer Type configuration option Pause Causes the modem to pause before processing the next character in the dial string The length of this pause is determined by the setting of the Pause Time configuration optio...

Страница 196: ... string can be included to enhance readability DS n Dial Stored Number Dials the number stored in Location n 1 24 To store a telephone number refer to the Zn x command Call Setup Dial Dial Directory En Command Character Echo E0 Disables echo to the DTE E1 Enables echo to the DTE Configure Edit DTE Dialer Hn Hook Switch Control H0 Modem goes on hook H1 Modem goes off hook H0 Call Setup Disconnect o...

Страница 197: ...isables modem from sending result codes to the DTE Q2 Enables in Originate mode only for modem to send result codes to the DTE Required for most UNIX applications Configure Edit DTE Dialer Sn r Change S Register Changes contents of S Register where n is the S Register and r is the new value None Sn Display S Register Displays value of S Register where n is the S Register number None T Tone Dial Se...

Страница 198: ...igure Edit Line Dialer Extended Result Code Enable Displays all result codes listed in Table 14 1 except for error control suffix Disable Only displays OK CONNECT RING NO CARRIER ERROR ERROR Add EC Displays result codes with EC suffix Add V42 MNP Displays result codes with V 42 or MNP suffix Use DTE Rate Displays DTE data rate instead of line rate Dial Tone Detect Enable Sets the modem for dial to...

Страница 199: ...ws DTR State of LSD follows state of DTR C4 Simulated Control Carrier State of LSD follows state of remote modem s RTS C5 DTR Disconnect Off State of LSD follows state of DTR except upon a disconnect where DTR remains ON and LSD turns OFF DTR must then toggle OFF and ON to turn LSD ON Use this setting for AT T DATAKIT applications Note that to use this option the DTR Action configuration option mu...

Страница 200: ...ntrol panel DCP Configure Factory Gn V 22bis Guard Tone G0 Disable G1 550 Hz G2 1800 Hz Configure Edit Dial Line NOTE The V 22bis Guard Tone cannot be disabled in some countries In Dial Transmit Level The AT command is In where n is 0 for 1 dBm 1 for 1 dBm 32 for 32 dBm NOTE In North America the range of allowable values is 10 dBm to 32 dBm This command is disabled in some countries it answers OK ...

Страница 201: ... of AT commands and force the modem into Dumb mode The only way to gain control of the modem is via the DCP Rn RTS Action R0 Standard RS232 R1 Ignores RTS R2 Simulated Control Carrier R3 Control Carrier Configure Edit DTE Interface Sn DSR Control S0 Forced On S1 Standard RS232 S2 Wink When Disconnect S3 Follows DTR S4 On Early S5 Delay to DTE Configure Edit DTE Interface Tn Tests T0 Abort Stops an...

Страница 202: ...k Source X0 Internal Modem provides transmit clock source for synchronous data Pin 15 X1 External Modem derives external transmit clock source provided on Pin 24 for synchronous data X2 Receive Clock Loop Modem derives transmit clock source from receive signal for synchronous data Pin 17 Configure Edit DTE Interface Zn x Store Telephone Numbers Modem saves the telephone numbers and dial command mo...

Страница 203: ... Control Control Escape K0 Discard Data Break First Enable K1 Discard Data Break First Disable K2 Keep Data Break First Enable K3 Keep Data Break First Disable K4 Keep Data Data First Enable K5 Keep Data Data First Disable Break Buffer Control Configure Edit V42 MNP Send Break Control Configure Edit V42 MNP Buffer Break Forces Escape Configure Edit DTE Dialer Nn Error Control Mode N0 Buffer Mode N...

Страница 204: ...le H3 Enable Configure Edit V42 MNP Buffer S Register List S Registers affect the operating parameters of the 391x Series modems S Registers are only applicable when the DTE Dialer Type configuration option is set for AT Refer to the Mn and Qn commands Table 14 3 lists all S Registers supported by the 391x Series modems The first column lists the S Register The second column lists all possible val...

Страница 205: ...ber of rings to count before answering The factory setting is 1 Configure Edit Line Dialer S2 AT Escape Character Register determines ASCII value used for escape sequence to enter Command mode from Data mode Enter a value from 0 to 127 for the escape character Any value greater than 127 causes the modem to disable the escape sequence When the escape sequence is disabled the modem cannot return to ...

Страница 206: ...r Disconnect1 Register determines how long in tenths of seconds the modem allows the carrier signal to be OFF before disconnecting the call Enter a value from 0 254 in 0 1 second increments A value of 255 disables this register The factory setting is 20 2 seconds Configure Edit Line Dialer S12 Escape Guard Time Register sets the value in 20 millisecond increments for the required pause before and ...

Страница 207: ...g is Disable Configure Edit Line Dialer S41 Dial Line Rate Register determines the modem s data rate and modulation scheme for operation on dial lines Register has the following values 1 14 400 V 32bis 2 12 000 V 32bis 3 9600 V 32bis 4 7200 V 32bis 5 4800 V 32bis 6 2400 V 22bis 7 1200 V 22 8 1200 212A 10 0 300 V 21 11 0 300 103J 12 1200 75 V 23 13 75 1200 V 23 18 600 75 V 23 19 75 600 V 23 20 19 2...

Страница 208: ...00 V 27bis 18 19 200 V 32terbo 19 16 800 V 32terbo 20 19 200 TMp 21 14 400 TMp 22 9600 TMp 23 7200 TMp 24 4800 TMp 25 2400 TMp The factory setting is 19200 V 32terbo Configure Edit Leased Line S45 Leased Tx Level2 Register determines the modem s transmit power output level over leased lines Enter a value from 0 to 15 dBm The factory setting is 0 dBm Configure Edit Leased Line S46 Auto Dial Backup ...

Страница 209: ... usually 43 dBm In France the factory setting is 26 dBm in 4 wire operation and 33 dBm in 2 wire operation Configure Edit Leased Line S49 Buffer Disconnect Delay Register determines how long the modem continues to transmit data stored in its buffers when the modem is commanded to disconnect by a locally attached DTE Enter a value from 0 255 seconds A value of 0 disables this register The factory s...

Страница 210: ... remote modem Register has the following values 0 Enable 1 Disable The factory setting is Enable Configure Edit Misc S56 Remote Access Password Register allows entry of the first pair leftmost of digits of a remote access password Any value from 00 to 99 is valid For example if the remote access password is 12345678 then S56 1 and 2 Configure Edit Misc S57 Remote Access Password Register allows en...

Страница 211: ...f coding used by the DTE while in V 25bis mode Register has the following values 0 ASCII 1 EBCDIC The factory setting is ASCII Configure Edit DTE Dialer S63 V 25bis Idle Character Register identifies to the modem the type of idle fill used by the DTE while in V 25bis mode Register has the following values 0 Mark 1 Flag The factory setting is Mark Configure Edit DTE Dialer S64 V 25bis New Line Char...

Страница 212: ...etermines if the modem uses the single number callback function Register has the following values 0 Disable 1 Enable The factory setting is Disable Configure Edit Misc S69 Make Busy Via DTR Register determines if the modem goes off hook busy when DTR is OFF Register has the following values 0 Disable 1 Enable The factory setting is Disable Configure Edit Line Dialer S70 V 27bis Train Register cont...

Страница 213: ...butary Configure Edit Misc S75 Network Management Address Register determines the modem s network address This address is used when accessing the modem from the 6700 Series NMS Enter a value from 0 network address 001 to 255 network address 256 The factory setting is 0 Configure Edit Dial S76 V 32bis Autorate Dial Line Register determines if Autorating is used on dial lines when connected in V 32b...

Страница 214: ...as the following values 0 Normal 1 No ERROR 2 No Strap or ERROR The factory setting is Normal Configure Edit DTE Dialer S85 Fast Disconnect Register allows the modem to disconnect immediately after receiving a disconnect command from a local DTE or its own diagnostic control panel Register has the following values 0 Disable 1 Enable The factory setting is Disable Configure Edit Line Dialer S88 Str...

Страница 215: ...error control If the modem is configured for Direct mode MNP mode Buffer mode or Synchronous operation this command is invalid This command does not have a front panel equivalent S90 DTE Rate VF Register allows the DTE s data rate to be equal to the VF telephone line data rate If Enabled the data rate between the DTE and modem is the same as the modem s VF data rate As a result when the modem is i...

Страница 216: ... PointToPoint 1 Multipoint The factory setting is PointToPoint Configure Edit Leased S95 Trellis Multipoint TMp Train Time Defines the length of time energy is sent from the tributary modem to the control modem More severe line conditions require longer time selections Register has the following values 0 10 milliseconds 1 20 milliseconds 2 50 milliseconds 3 100 milliseconds 4 200 milliseconds 5 30...

Страница 217: ...r Size Register limits the modem s buffer size to a maximum of 20 characters Register has the following values 0 Disable 1 Enable The factory setting is Disable Configure Edit V42 MNP Buffer S98 Special Standby Supports automatic dial standby when a third modem is used for dial backup Register has the following values 0 Disable 1 Enable The factory setting is Disable Configure Edit Leased ...

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Страница 219: ...A 1 3910 A2 GN32 40 September 1998 Menu Tree Overview Pages A 2 and A 3 provide a menu tree for the 391x Series modems A ...

Страница 220: ... Type DialTone Detect Blind Dial Paus BusyTone Detect Pause Time NoAnswer Timout Fast Disconnect Line Crnt Disc Long Space Disc No Carrier Disc No Data Disc Auto Make Busy MakeBusyVia DTR Dial_Line Dial Line Rate V32bis Automode V32bis Autorate V32bis_Override Dial TX Level V22b Guard Tone V32bis Train Leased_Line Leased Mode LeasedLine Rate V32bis Autorate V32bis Override Leased TX Level Auto Dia...

Страница 221: ...e mode Self Loc_Digital_Loop and Pattern appear if the secondary channel is used Rem_Digital_Loop does not appear in TMp mode Does not appear if configured for Synchronous mode Some choices within this group may not appear depending upon how previous configuration options have been selected Choose Address TMP Control only Choose Password TMP only Secondary Prim data blckd ExitRem appears instead o...

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Страница 223: ...odem Health Symptom Action The modem did not pass the power up self test Contact your service representative The power LED does not light or the LCD does not display information Make sure the modem s ON OFF switch is in the ON position Make sure the power supply is connected to the dc power receptacle on the modem If the Power LED and or LCD do not operate contact your service representative A pro...

Страница 224: ...ed for the appropriate leased line mode For example if you have a 4 wire leased line then the modems must be configured for 4 wire operation Table B 3 Dial Backup Operation Symptom Action The dial backup line is present but the modems cannot connect Verify that the correct telephone number for the remote modem is stored in directory location 1 Verify that both modems have the Auto Dial Backup conf...

Страница 225: ...ion option is enabled Refer to DTE Dialer in Chapter 5 DCP Configuration Reload the Async Dial factory configuration area to guarantee that all configuration options are returned to their proper setting Make sure that all AT commands are terminated with a carriage return Verify that the Carriage Return Character configuration option matches what is used by the DTE Refer to DTE Dialer in Chapter 5 ...

Страница 226: ...attached to the correct connectors on the rear of the modem The modem goes off hook answers but does not connect Perform a Local Analog Loopback test and verify that data entered at the DTE is echoed back to the DTE Verify that the originating modem is compatible with your receiving modem Verify that the originating modem recognizes your modem s answer tone Verify that the originating modem suppor...

Страница 227: ...t If the modem is operating behind a PBX determine if a 9 and comma are needed before the telephone number Verify whether Tone or Pulse dialing is needed Verify that both modems are configured the same in regard to Error Control Try calling in Buffer mode If both modems use V 32bis or V 32 modulation try setting the modem s V 32bis Train configuration option to Long Intermittent disconnects high e...

Страница 228: ...rambled Verify that the character format data bits parity and stop bits is set to the same value in both modems Data is missing during a transfer Verify that you are using the same method of flow control for both the modem and the DTE If using XON XOFF flow control verify that the modem s parity matches the DTE s parity ...

Страница 229: ...C 1 3910 A2 GN32 40 September 1998 Pin Assignments Overview This appendix lists EIA 232 D and VF TELCO pin assignments and provides information about auxiliary cables which are not supplied C ...

Страница 230: ...nd 8 LSD CF 109 DCE Line Signal Detect 9 12V Reserved for test purposes may be used to drive one RS 232 load 10 12V Reserved for test purposes may be used to drive one RS 232 load 11 Unassigned 12 CT112 CI 112 DCE Data Signal Rate Select 13 Reserved for future function 14 Reserved for future function 15 TXC DB 114 DCE Transmit Clock 16 Reserved for future function 17 RXC DD 115 DCE Receive Clock 1...

Страница 231: ...10 modular jacks as well as the pin assignments for the TELCO jacks See Figure C 1 Table C 2 VF Connector Pin Assignments Type of Telco Jack Pin Leased Dial RJ11 JM8 6 Pin Leased 1 4 Wire TX 2 Wire TX RX Ring 1 2 4 Wire TX 2 Wire TX RX Tip 1 3 4 Ring Ring Ring 5 Tip Tip Tip 6 7 4 Wire RX Tip 8 4 Wire RX Ring Figure C 1 VF Pin Orientation ...

Страница 232: ...998 3910 A2 GN32 40 Auxiliary Cables Not Supplied To add an external telephone to your modem use an external Y cable to connect the phone line to both the modem and the telephone Figure C 2 Figure C 2 Wiring Diagram Y Cable for External Telephone ...

Страница 233: ... transmit levels permitted in the private line service and those permitted in the public switched network The industry standard is now an 8 pin keyed modular jack known as the USOC JM8 Bellcore Technical Reference TR EOP 000242 Issue 1 released May 1985 When ordering the installation of the USOC JM8 specify the appropriate wiring options 2 wire operations 4 wire operations w o TEK leads 4 wire ope...

Страница 234: ... a 25 pin crossover cable Figure C 4 1 2 3 4 5 6 7 8 25 POSITION PLUG PIN NO 25 POSITION PLUG PIN NO 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 TXD RXD RTS DSR SG LSD RXC DTR XTXC TXD RXD RTS DSR SG LSD RXC DTR XTXC Figure C 4 Wiring Diagram 25 Pin Crossover Cable ...

Страница 235: ...scuss those V 25bis commands supported by the 391x Series modems and the response to those commands Tables D 1 and D 2 list the V 25bis commands and response messages NOTE The 391x Series modem must be configured for V 25bis dialing Refer to DTE Dialer Type configuration option in Table 5 3 of Chapter 5 DCP Configuration Call Request Commands Call Request commands are issued from the DTE to the mo...

Страница 236: ...LTONE and ERROR The CFI response format is CFIxx Where xx is ET is Engaged tone NS is Number not stored CB is Local DCE busy RT is Time out on ring tone AB is Abort call on time out NT is Answer tone not detected FC is Forbidden call ET is similar to the Call Failure Messages Busy Signal and Trunk Busy and the result code BUSY NS is similar to the Common Operational Message Invalid Number and the ...

Страница 237: ...o disable the modem from answering the call INC is similar to the AT result code RING Disregard Incoming Call DIC The DIC command prevents the modem from answering an incoming call This command is only valid once the DTE receives an incoming call INC response from the modem A DIC must be issued within 5 seconds after receiving an INC The DIC command format is DIC If DIC is issued within 5 seconds ...

Страница 238: ...ory location The RLD command format is RLD Request List of Forbidden Numbers RLF The Request List of Forbidden Numbers RLF command displays telephone numbers that are forbidden as a result of failed call attempts All the numbers forbidden are displayed irrespective of whether they belong to a directory location The RLF command format is RLF Request List of Stored Numbers RLN The Request List of St...

Страница 239: ...e telephone number List Stored Numbers Response LSN LSN is a response to an RLN command issued by the DTE If a directory location is specified then the telephone number for that location appears If no directory location is specified then all telephone numbers stored in memory appear The LSN response format is LSNx n Command Response A Command Response indicates that the command entered was a valid...

Страница 240: ...x Series modems Table D 1 V 25bis Commands V 25bis Command Description AT Command S Register Equivalent Call Request Commands CRN Call Request with Number Provided ATD CRS Call Request with Memory Address ATDS Call Answer Commands INC Incoming Call Indication RING DIC Disregard Incoming Call NONE CIC Connect Incoming Call ATA Program Command PRN Program Normal AT Z List Request RLD Request to List...

Страница 241: ...supported by the 391x Series modems Table D 2 V 25bis Response Messages V 25bis Command Description AT Command Result Code Equivalent Call Response CFI Call Failure Indication BUSY NO ANSWER NO CARRIER NO DIAL TONE ERROR CNX Call Connecting Indication CONNECT Command Response VAL Valid Command OK INV Invalid Command ERROR ...

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Страница 243: ... NUL CTRL 01 001 SCH CTRL A 02 002 STX CTRL B 03 003 EXT CTRL C 04 004 EOT CTRL D 05 005 ENQ CTRL E 06 006 ACK CTRL F 07 007 BEL CTRL G 08 008 BS CTRL H 09 009 HT CTRL I 0A 010 LF CTRL J 0B 011 VT CTRL K 0C 012 FF CTRL L 0D 013 CR CTRL M 0E 014 SO CTRL N 0F 015 SI CTRL O 10 016 DLE CTRL P 11 017 DC1 CTRL Q 12 018 DC2 CTRL R 13 019 DC3 CTRL S 14 020 DC4 CTRL T 15 021 NAK CTRL U 16 022 SYN CTRL V 17...

Страница 244: ...II Value 19 025 EM CTRL Y 1A 026 SUM CTRL Z 1B 027 ESC CTRL 1C 028 FS CTRL 1D 029 GS CTRL 1E 030 RS CTRL Ax 1F 031 US CTRL _ 20 032 spacebar 21 033 22 034 23 035 24 036 25 037 26 038 27 039 28 040 29 041 2A 042 2B 043 2C 044 2D 045 2E 046 2F 047 30 048 0 31 049 1 32 050 2 33 051 3 34 052 4 35 053 5 36 054 6 37 055 7 38 056 8 39 057 9 3A 058 3B 059 3C 060 ...

Страница 245: ...haracter Decimal ASCII Value 3D 061 3E 062 3F 063 40 064 41 065 A 42 066 B 43 067 C 44 068 D 45 069 E 46 070 F 47 071 G 48 072 H 49 073 I 4A 074 J 4B 075 K 4C 076 L 4D 077 M 4E 078 N 4F 079 50 080 P 51 081 Q 52 082 R 53 083 S 54 084 T 55 085 U 56 086 V 57 087 W 58 088 X 59 089 Y 5A 090 Z 5B 091 5C 092 5D 093 5E 094 5F 095 60 096 ...

Страница 246: ...ue Key Control Character Decimal ASCII Value 61 097 a 62 098 b 63 099 c 64 100 d 65 101 e 66 102 f 67 103 g 68 104 h 69 105 i 6A 106 j 6B 107 k 6C 108 l 6D 109 m 6E 110 n 6F 111 o 70 112 p 71 113 q 72 114 r 73 115 s 74 116 t 75 117 u 76 118 v 77 119 w 78 120 x 79 121 y 7A 122 z 7B 123 7C 124 7D 125 7E 126 7F 127 delete ...

Страница 247: ...ation Options Overview Table F 1 lists all default configuration options for the factory preset configurations An N A indicates that the value for this configuration option does not appear on the LCD when that factory default configuration is selected F ...

Страница 248: ...tandard RS232 Ignore N A Trib or Ignore Control Ignore Ignore Standard RS232 RTS Antistream N A N A 10 sec Trib or N A Control N A N A N A CTS Control Standard RS232 Forced On Standard RS232 Forced On Wink When Disc Standard RS232 RTS CTS Delay 0 msec 0 msec 0 msec 0 msec 0 msec 0 msec LSD Control Standard RS232 Standard RS232 Standard RS232 Standard RS232 Wink When Disc Standard RS232 TX Clock So...

Страница 249: ...sec 1 sec N A Break Forces Escape N A Disable N A Disable Disable N A Command Character Echo N A Enable N A Enable Enable N A Carriage Return Character N A 013 ASCII N A 013 ASCII 013 ASCII N A Backspace Character N A 008 ASCII N A 008 ASCII 008 ASCII N A Linefeed Character N A 010 ASCII N A 010 ASCII 010 ASCII N A Result Codes N A Enable N A Enable Enable In Originate N A Extended Result Codes N ...

Страница 250: ...ble Enable Enable Enable Enable Disable No Carrier Disconnect1 2 sec 2 sec 2 sec 2 sec 2 sec 2 sec No Data Disconnect1 Disable Disable Disable Disable Disable Disable Auto Make Busy 3911 only Disable Disable Disable Disable Disable Disable Make Busy via DTR Disable Disable Disable Disable Disable Disable Dial Line Dial Line Rate 19200 V32t 19200 V32t 19200 V32t 19200 V32t 19200 V32t 19200 V32t V 3...

Страница 251: ...A N A N A N A Leased Transmit Level1 3 0 dBm 0 dBm 0 dBm N A N A N A Auto Dial Backup Disable Disable Disable N A N A N A Auto Dial Standby Disable Disable Disable N A N A N A Special Standby Disable Disable Disable N A N A N A Dial Standby Time 10 min 10 min 10 min N A N A N A Carrier On Level1 43 dBm 43 dBm 26 dBm TMp Control or 43 dBm TMp Tributary N A N A N A V 27bis Train N A N A N A N A N A ...

Страница 252: ...E N A CTS_to_DTE CTS_to_DTE N A Flow Control of Modem N A RTS_to_Modem N A RTS_to_Modem RTS_to_Modem N A XON XOFF Passthrough N A N A N A N A N A N A Modem to Mode m Flow Control N A Disable N A Disable Disable N A Break Buffer Control N A Keep Data N A Keep Data Keep Data N A Send Break Control N A Data First N A Data First Data First N A Buffer Disconnect Delay N A 10 seconds N A 10 seconds 10 s...

Страница 253: ...e Enable Remote Access Password2 4 00000000 00000000 00000000 00000000 00000000 00000000 Directory Location No 1 Callback Disable Disable Disable Disable Disable Disable NMS Call Messages2 4 Call Connect Progress Call Connect Progress Call Connect Progress Call Connect Progress Call Connect Progress Call Connect Progress Network Position Identification Tributary 3910 or Control 3911 N A Tributary ...

Страница 254: ...acter 013 ASCII 013 ASCII 013 ASCII 013 ASCII 013 ASCII 013 ASCII DTE Password Backspace Character 008 ASCII 008 ASCII 008 ASCII 008 ASCII 008 ASCII 008 ASCII Get User ID Disable Disable Disable Disable Disable Disable NMS Reporting2 4 000 000 000 000 000 000 Answer Security Mode2 4 No Answer Security No Answer Security No Answer Security No Answer Security No Answer Security No Answer Security Or...

Страница 255: ... 40 September 1998 Sample Configurations Overview This appendix provides diagrams of sample configurations for the 391x Series modems Following each diagram the appropriate configuration options and cables are listed G ...

Страница 256: ... Point to Point Configuration Options 3910 A Use Sync Leased Answer default configuration options 3910 B Use Sync Leased Originate default configuration options Cables Cable 1 Use a standard customer supplied EIA 232 D V 24 cable with a DB 25 P plug connector at one end to attach to the modem Attach this to the connector labeled DTE1 Cable 2 Use part number 125 0053 1431 an 8 position 8 wire modul...

Страница 257: ... at 2 4 kbps tributaries at 2 4 kbps Tributary rates will never exceed control rates If tributary and control rates are equal reducing the control rate will automatically reduce the tributary rate Cable 1 Cable 1 Cable 2 Cable 2 Leased 19200 TMp 14400 TMp TX TX Cable 1 Cable 2 14400 TMp TX DTE Sync DTE Sync DTE Sync 3910 A 3910 B 3910 C Figure G 2 Sample Configuration Multipoint Configuration Opti...

Страница 258: ...iguration options with the following exception Auto Dial Back Set to Enable 3910 B Use Sync Leased Originate default configuration options with the following exception Auto Dial Back Set to Enable Cables Cable 1 Use a standard customer supplied EIA 232 D V 24 cable with a DB 25 P plug connector at one end to attach to the modem Attach this to the connector labeled DTE1 Cable 2 Use part number 125 ...

Страница 259: ...e Sync Leased Answer default configuration options 3910 B Use Sync Leased Originate default configuration options Cables Cable 1 Use a standard customer supplied EIA 232 D V 24 cable with a DB 25 P plug connector at one end to attach to the modem Attach this to the connector labeled DTE1 Cable 2 Use part number 125 0053 1431 an 8 position 8 wire modular cord that is supplied with the modem Attach ...

Страница 260: ...ns 3911 Use Sync Leased Answer default configuration options 3910 Use Sync Leased Originate default configuration options Cables Cable 1 Use a standard customer supplied EIA 232 D V 24 cable with a DB 25 P plug connector at one end to attach to the modem Attach this to the connector labeled DTE1 Cable 2 Use part number 125 0053 1431 an 8 position 8 wire modular cord that is supplied with the modem...

Страница 261: ...le 2 Leased 19200 V32t 19200 V32t TX TX Cable 1 Cable 1 Cable 1 4800 4800 4800 4800 Cable 1 Cable 1 Cable 1 Cable 5 4800 4800 4800 4800 DTE Sync DTE Sync DTE Sync DTE Sync 3920 A 3920 B 1 2 3 4 1 2 3 4 Cable 1 Cable 2 Cable 2 Leased 4800 TMp 4800 TMp TX TX Cable 1 Cable 2 4800 TMp TX DTE Sync DTE Sync 3910 A 3910 B 3910 C Figure G 6 Sample Configuration Extended Multipoint ...

Страница 262: ...ult configuration options with the following exceptions TX Clock Source Set to RXC_Loop LeasedLine Rate Set to 4800 TMp 3910 C Use TMp Trib default configuration options with the following exceptions TX Clock Source Set to RXC_Loop LeasedLine Rate Set to 4800 TMp Cables Cable 1 Use a standard customer supplied EIA 232 D V 24 cable with a DB 25 P plug connector at one end to attach to the modem Att...

Страница 263: ...ns with the following exception Network position Set to Control 3910 B Use Sync Leased Originate default configuration options with the following exception TX Clock Source Set to External Diagnostic Connection Set to Modem DC 3910 C Use Sync Leased Answer default configuration options with the following exceptions TX Clock Source Set to External Extended Channel Set to Enable Upstream Port Set to ...

Страница 264: ... Cable 2 Use part number 125 0053 1431 an 8 position 8 wire modular cord that is supplied with the modem Attach this to the connector labeled LEASED Cable 5 Use part number 818 2759 0111 or an equivalent customer supplied EIA 232 D V 24 crossover cable with DB 25 P plug connectors on both ends to attach to the modems See Appendix C for pin assignments Cable 6 Use part number 125 0040 0031 a 6 posi...

Страница 265: ... wire modular cord 7 foot length 125 0067 0031 8 position 8 wire modular cord 14 foot length 125 0053 1431 Universal Power Supply 327 0074 0131 3600 Hubbing Device 3600 F3 300 EIA 323 D V 24 Crossover Cable 818 2759 0111 6 position 6 wire modular cord 125 0040 0031 8 position 8 wire modular cord 125 0053 1431 871A Adapter 002 0026 0031 H ...

Страница 266: ...COMSPHERE 3900 Series Modems H 2 September 1998 3910 A2 GN32 40 This page intentionally left blank ...

Страница 267: ... factory preset configuration area containing the configuration options most often used in asynchronous dial networks Data transmission that is synchronized by a transmission start bit at the beginning of a character five to eight bits and one or more stop bits at the end The idle state prior to the device establishing a successful connection with a remote device It is from the AT Command mode tha...

Страница 268: ...at can be modulated by another signal that contains information to be transmitted A device that is designed for installation in a COMSPHERE 3000 Series Carrier and used at central site operations Up to 16 devices can be installed per carrier with six carriers per cabinet Consultative Committee on International Telegraphy and Telephony An advisory committee established by the United Nations to reco...

Страница 269: ...Panel The front panel of a device that continuously provides status information about the device s operation and allows an operator to manage its operation A generic term used for both the standalone and carrier mounted models The process of recovering data from a modulated carrier wave Device Health and Status A detailed account of device alarms The diagnostic interface between two network device...

Страница 270: ...ommunications Commission The Board of Commissioners that regulates all electrical communications that originate in the United States Forward Error Correction A method of error control for data transmission where the receiving device can detect and correct a character or block of code containing a predetermined number of erroneous bits Front End Processor A communications computer associated with a...

Страница 271: ...ontinuous space to the opposite modem before disconnecting A diagnostic procedure that sends a test message back to its origination point Used to test various portions of a data link in order to isolate an equipment or data line problem The structure containing the menu hierarchy starting at a Top Level menu and extending down to various device functions In a multipoint network several different d...

Страница 272: ...he diagnostic address of a control device derived from its location in the carrier its carrier and slot number A line or circuit connecting two stations A list containing the network management addresses of downstream modems Plain Old Telephone Service Standard telephone service over the PSTN with an analog bandwidth of less than 4 KHz A test that checks most hardware components when power is appl...

Страница 273: ...s dial networks Transmission in which the data characters and bits are transmitted at a fixed rate with transmitter and receiver synchronized This eliminates the need for start and stop bits as used in asynchronous transmission and is thus faster and more efficient Time Division Multiplexer A device that enables the simultaneous transmission of multiple independent data streams into a single high ...

Страница 274: ...sed telephone lines An ITU T standard for modems operating full duplex with asynchronous or synchronous data over dial networks PSTN or leased lines at 14 400 12 000 9600 7200 or 4800 bps A modulation that adds the 19 200 bps and 16 800 bps data rates to the V 32bis data rates It is a proprietary modulation not an ITU T standard AnITU T standard for error control protocol An ITU T standard for dat...

Страница 275: ...ased 1 2 2 4 10 1 status 4 7 Backup Line Check 5 38 Bell 103J 5 30 212A 5 30 Bisync 5 20 D 1 Blid Dial Pause 5 26 Break Buffer Control 5 44 Break Forces Escape 5 21 Buffer Disconnect Delay 5 45 buffer size reduced asynchronous 5 45 busy control 7 5 7 7 Busy Tone Detect 5 26 C cables 2 4 2 5 H 1 Call Setup branch 3 8 10 1 10 2 Canadian government requirements 1 7 Carriage Return Character 5 22 Carr...

Страница 276: ...ect line current 5 27 long space 5 27 no carrier 5 28 no data 5 28 options reloaded after 5 48 disconnecting a call 10 3 10 7 Download Software 7 7 DSR Control 5 13 DTE connection 2 4 B 3 status 3 3 3 5 4 7 DTE Dialer configuration options group 5 19 5 24 DTE Dialer Type 5 20 DTE Interface configuration options group 5 9 5 19 DTE rate forced to VF rate 5 18 DTR Action 5 12 Dual Leased Line 5 38 du...

Страница 277: ...6 8 10 remote digital 8 5 8 10 loudspeaker on off 5 48 volume 5 49 LSD Control 5 16 M Make Busy 7 5 7 7 Automatic 5 28 NIM 5 28 Via DTR 5 29 manual dial See Talk Data menu structure 3 8 quick configuration display 3 13 tree A 1 A 3 messages LCD 3 8 3 14 4 9 4 10 result codes 14 3 14 4 Misc configuration options group 5 48 5 51 mixed inbound rates 1 1 5 34 G 3 Mixed Tributary Firmware 5 51 MNP erro...

Страница 278: ...r equivalence number REN 1 5 RTS Action 5 14 Antistream 5 14 RTS CTS Delay 5 15 S S Register list 14 14 14 28 Security access messages 3 12 branch 3 8 12 4 12 12 configuration options 12 13 12 15 database tables 12 2 12 3 12 18 12 19 passwords 12 2 12 4 12 16 12 17 Select key 2 10 2 11 3 7 self test 8 3 8 10 self test 2 5 Send Break Control 5 44 serial number Ser 4 6 service line 7 6 7 7 shared di...

Страница 279: ...ents 1 5 1 6 UNIX dial 2 6 5 1 5 10 Upstream Port 5 19 V V 22bis Guard Time dial line 5 32 V 25bis coding 5 24 dialing commands and responses D 1 D 7 New Line Character 5 24 V 27bis Train Time 5 37 V 29 Link Configuration 5 37 Retrain 5 37 Train On Data 5 37 V 32bis Automode dial line 5 31 Autorate dial line 5 31 leased line 5 35 Override dial line 5 31 leased line 5 35 Train Time dial line 5 32 V...

Страница 280: ...COMSPHERE 3900 Series Modems Index 6 September 1998 3910 A2 GN32 40 ...

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