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Configure Branch

8-13

3980-A2-GB30-40

October 1998

Table 8-1

(7 of 7)

DTE Interface Configuration Options

TX Clock Source: Internal

Nxt

Internal

External

RXC_Loop

Transmit Clock Source. Determines the source of timing for synchronous data transmitted from the DTE.

Internal – The transmit data’s clock source is derived from the modem’s internal clock and output on Pin 15 (TXC) of the
RS-232D interface.

External – The transmit data’s clock source is provided by the DTE on Pin 24 (EXT) on the RS-232D interface. This
configuration option automatically disables Autorate, Automode, and Asymmetric Rate mode when running V.34
modulation.

RXC Loop – The modem’s transmit clock is derived from its received signal and is output on Pin 15 (TXC) of the
RS-232D interface. RXC Loop does not appear if SDC is enabled.

NOTE: This configuration option only appears if Async/Sync Mode is configured for Sync.

The factory default is Internal.

AT command equivalent is &X

n.

CT111_Rate Cntl: Disable

Nxt

Disable

Fallback1

Fallback2

CT111 Rate Control. Allows the DTE to control modem rate via Pin 23 of the RS-232D interface. This configuration
option determines the effect of the DTE Rate control signal. CT111 is also known as CH on the RS-232D interface.

Disable – Disregards CT111 Rate Control.

Fallback1 – Forces the modem to decrease its configured data rate to the next lower data rate when CT111 is Off. Valid
only for V.32bis, V.33, V.29 modulation. Modem will only fall back within the same modulation scheme. When CT111
turns ON, the modem returns to its previous data rate.

Fallback2 – Forces the modem to decrease two data rates 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 Autorate and Automode configuration options. CT111 Rate Control is not supported with V.34.

The factory default is Disable.

AT command equivalent is S-register S61=

n.

DTE Rate=VF: Disable

End Disable Enable

DTE Rate = VF Rate. Forces the data rate of the connection between the DTE (computer) and the modem to be the
same as the VF (telephone line) rate.

Disable – The DTE rate is the value of the Async DTE Rate configuration option.

Enable – The DTE rate is identical with the VF rate.

NOTE: Not all DTE rates are available in Async Dial Direct Mode. This configuration option has no effect if Async/Sync

Mode is set for Sync or if V.42/MNP/Buffer is set to DirectMode.

The factory default is Disable.

AT command equivalent is S-register S90=

n.

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Summary of Contents for COMSPHERE 3800PLUS

Page 1: ...COMSPHERE 3800PLUS MODEMS USER S GUIDE Document No 3980 A2 GB30 41 February 2002 ...

Page 2: ...trademarks service marks registered trademarks or registered service marks of their respective owners Document Feedback We welcome your comments and suggestions about this document Please mail them to Technical Publications Paradyne Corporation 8545 126th Ave N Largo FL 33773 or send e mail to userdoc eng paradyne com Include the number and title of this document in your correspondence Please incl...

Page 3: ...e applicable Safety Standards and regulatory requirements of the country in which it is installed If necessary consult with the appropriate regulatory agencies and inspection authorities to ensure compliance 7 Input power to this product must be provided by one of the following 1 a UL Listed CSA Certified power source with a Class 2 or Limited Power Source LPS output for use in North America or 2 ...

Page 4: ...ems collectively are called 3800Plus modems United States Notice to Users of the Public Switched Telephone Network 1 This equipment complies with Part 68 of the FCC rules On the equipment is a label that contains among other information the FCC registration number and ringer equivalence number REN for this equipment The label is located on the bottom of the Model 3810Plus modem and on the circuit ...

Page 5: ...turn instructions using one of the following methods Via the Internet 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 1 727 530 2340 If the trouble is causing harm to the telephone network the telep...

Page 6: ...y 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 wat...

Page 7: ...10Plus Installation Overview 2 1 3810Plus Modem Package 2 1 3810Plus Modem Installation 2 2 DTE Connection 2 3 Dial Line Connection 2 4 3810Plus 4 Wire 2 Wire Leased Line Network Connection 2 4 AC Power Supply Connection 2 4 Network Management System Connection 2 5 Modem Power Up 2 5 Removing and Replacing 3810Plus Modems 2 6 3 3811Plus Installation Overview 3 1 3811Plus Modem Package 3 1 3811Plus...

Page 8: ...Setup Branch 5 2 6 Status Branch Overview 6 1 Status Branch 6 1 7 Test Branch Overview 7 1 Test Branch 7 2 8 Configure Branch Overview 8 1 Configure Branch 8 4 Configuration Tables 8 7 Security Configuration Options 8 46 9 Control Branch Overview 9 1 Control Branch 9 1 Automatic Firmware Download 9 6 10 Remote Branch Overview 10 1 Remote Branch 10 1 11 Security Overview 11 1 Security Branch 11 4 S...

Page 9: ...g Modes 13 1 Command Guidelines 13 1 AT Command List 13 2 S Register List 13 18 Appendices A Menu Tree A 1 B Result Codes B 1 C Troubleshooting C 1 D Technical Specifications D 1 E Pin Assignments E 1 F ITU T V 25bis Dialing Commands and Responses F 1 G Default Configuration Options G 1 H Equipment List H 1 I Synchronous Data Compression I 1 Glossary Index ...

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Page 11: ...eplate and Optional SDU 4 2 4 3 3800Plus LCD and Keypad 4 4 5 1 Dial Backup 5 3 7 1 Local Analog Loopback 7 3 7 2 Remote Digital Loopback 7 4 7 3 Local Digital Loopback 7 5 7 4 Pattern Test and Local Analog Loopback Test 7 6 7 5 Pattern Test and Remote Digital Loopback Test 7 6 7 6 End to End Pattern Test 7 6 8 1 DCP Configuration Process 8 2 8 2 AT Command Configuration Process 8 3 E 1 VF Pin Ori...

Page 12: ...rity Group Options 11 8 11 3 Set Originate Security Group Options 11 9 11 4 Security Database Table Using VF Side Passwords 11 12 11 5 Security Database Table Using DTE Side Password 11 13 11 6 Security Database Table Using Both VF Side and DTE Side Password 11 13 11 7 Security Database Table Using Paired VF Side and DTE Side Passwords 11 14 13 1 3800Plus AT Commands 13 3 13 2 3800Plus S Registers...

Page 13: ...describes the Control branch Chapter 10 describes the Remote branch Chapter 11 describes the Security branch Chapter 12 provides general information about operating 3800Plus modems in fax mode Chapter 13 provides instructions for displaying and changing AT commands and S Registers Appendix A provides a menu tree for 3800Plus modems Appendix B provides a list and description of result codes issued ...

Page 14: ... 3600 F3 300 Installation Instructions 3980 A2 GZ41 COMSPHERE 3811Plus Modem Installation Instructions 6700 A2 GY31 COMSPHERE 6700 Series Network Management System User s Guide Contact your sales or service representative to order additional product documentation Paradyne documents are also available on the World Wide Web at http www paradyne com Select Service Support Technical Manuals ...

Page 15: ...ers to temporarily customize modem settings thereby permitting communication with the calling modem Upon disconnection the 3800Plus modem falls back to its original configuration settings and resumes normal operation The modem s compatibility with a number of dialing methods and protocols such as asynchronous AT commands ITU T V 25bis dialing and the user friendly diagnostic control panel DCP perm...

Page 16: ...rks or 2 wire 4 wire leased lines Complement of self tests local and remote loopbacks including ITU T compatible V 54 Seven factory defined configurations and two user defined configuration areas Originate Security and three Answer Security modes which guard against unwanted user access to the host DTE Directory 1 Callback capability COMSPHERE Models The COMSPHERE high speed modem is available in ...

Page 17: ...eration The rear of the 3810Plus modem contains an ON Off power switch a low voltage power connector an 8 pin modular jack for leased line connection an 8 pin modular jack for dial line connection a 4 pin modular jack for network management and a DB 25 S DTE connector 3810Plus Modem Package After opening the modem s package check for damage and verify that the following items are present 3810Plus ...

Page 18: ... for leased line applications 3810Plus 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 line cords and make sure the modem is located within reach of the ac power outlet The distance between your modem and DTE should be minimized if DTE data rates exceed 19 200 b...

Page 19: ...ke sure the modem s rear panel power switch is Off 2 Connect the DB 25 P male connector on the cable to the DB 25 S female connector labeled DTE 1 Figure 2 2 on the modem s rear panel Use a small screwdriver to tighten the cable to the modem 3 Connect the DB 25 P connector on the cable to the DB 25 S connector on the DTE Use a small screwdriver to tighten the cable to the DTE 495 14677 DB 25 P CON...

Page 20: ...D Figure 2 2 2 Insert the other end of the modular cord into the leased line network interface demarc 3 If you intend to use dial backup follow steps listed in Dial Line Connection AC Power Supply Connection WARNING Power supplies from other modems may fit into the POWER connector but connecting the wrong power supply can cause damage to the modem or the power supply Use the following procedure to...

Page 21: ... C C O U T D C I N CC IN DC OUT Hubbing Device CC OUT DC IN Figure 2 3 3600 Hubbing Device Modem Power Up Once your modem is properly connected to the DTE dial and or leased lines and ac outlet press the modem s rear panel power switch to the ON position The modem begins a power up self test This test takes several seconds to perform and verifies the operation of most hardware components within th...

Page 22: ...from the connector on the rear of the modem 3 Disconnect the dial and leased line modular cords from the modem s rear panel 4 Disconnect the DTE interface cable from the modem s rear panel If the modem is to be removed for service return it to the company using the procedures described in Government Requirements and Equipment Return near the beginning of this book 5 Install the replacement modem a...

Page 23: ... card that provides SDCP and network management interfaces to access products installed in the carrier SDUs are only required if a single SDCP is used by multiple COMSPHERE 3000 Series Carriers in a cabinet or if a network management system NMS is used For more details on the COMSPHERE 3000 Series Carrier refer to the COMSPHERE 3000 Series Carrier Installation Manual 3811Plus Modem Package After o...

Page 24: ...lus Modem Installation The 3811Plus modem is designed for installation in a COMSPHERE 3000 Series Carrier which supplies operating power and the dial and or leased line network connections For correct power DTE dial line leased line NIM and network management cabling information refer to the COMSPHERE 3000 Series Carrier Installation Manual 496 14488 02 TXD RXD RTS CTS DSR DTR LSD 103 104 105 106 ...

Page 25: ...em vertically with the latch on its faceplate in the open position and insert it into the top and bottom card guides of one of the slots numbered 1 16 see Figure 3 2 Slide the modem into the slot aligning the modem with the rear connector plate until the backplane connector and DTE connector seat firmly into the back of the carrier The faceplate latch automatically closes as you push the modem int...

Page 26: ...ss the Select key to place the SDCP in direct communication with the selected modem The LCD displays the Top Level menu for the selected modem In addition the Front Panel LED on the modem s faceplate lights up 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 3 2 This prevents...

Page 27: ...gh which Top Level menu branches are accessed to perform the following Initiate and disconnect dial operations Check modem status Set up configuration options Initiate diagnostic tests Access remote modems through the local modem s DCP The LCD displays the result of any command initiated using the DCP Most of these operations can be performed from an attached asynchronous DTE using the AT command ...

Page 28: ...odem s operating condition All of the status indicators on the 3810Plus modem are on the DCP Figure 4 1 whereas the status indicators for the carrier mounted 3811Plus modem are located on its faceplate the SDCP and the SDU faceplate Figure 4 2 The standalone 3810Plus modem s DCP has 13 LEDs and the carrier mounted 3811Plus has 16 LEDs These LEDs are listed and described in Table 4 1 LEDs specific ...

Page 29: ...rv 3811Plus only yellow ON The modem is connected to the carrier service line rather than the normally assigned dial network SQ yellow The receive telephone line signal is degraded TXD 103 green The modem is receiving data from the DTE to transmit ON equals space RXD 104 green Data is being transferred to the DTE ON equals space RTS 105 green RTS signal is ON CTS 106 green CTS signal is ON or the ...

Page 30: ...owing kinds of information Operational status Configuration options DCP entry displays Remote modem access F1 Idle 28 8 Call_Setup F2 F3 TOP HIDDEN INDICATORS RETURNS DISPLAY TO TOP LEVEL MENU RIGHT SCROLL KEY MOVES UP ONE LEVEL FROM CURRENT FUNCTION KEYS LCD BOTTOM LINE LEFT SCROLL KEY LINE CHOICE LCD DISPLAY Figure 4 3 3800Plus LCD and Keypad LCD Display The LCD consists of a top line and bottom...

Page 31: ...e Top Level menu appears If Yes is selected then changes are saved to either Active Saved Customer 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...

Page 32: ... the VF line and DTE interface as well as view the identity of the modem See Chapter 6 Test Used to begin and end various modem tests See Chapter 7 Configure Used to change and save the modem s configuration options See Chapter 8 Control Used to control the modem s hardware and software functions See Chapter 9 Remote Used to access and control a remote 3800Plus modem See Chapter 10 Security Used t...

Page 33: ...ate OnLine MR EC Indicates the modem is online in Data mode and operating at the displayed data rate EC error control displays if error control is operational Fax Tx MR The modem is transmitting a fax on a dial line Fax Rx MR The modem is receiving a fax on a dial line Ring Indicate The local modem is receiving an incoming ring Test MR The modem is in test mode operating at the displayed data rate...

Page 34: ...No Dial Test The modem cannot dial because it is running a Test No Dial Tone The modem has aborted the call because it cannot detect a dial tone No Quiet Answer The modem has detected No Quiet Answer before the time out setting of the No Answer Disconnect configuration option Trunk Busy The modem is receiving a fast trunk busy Call Disconnect Messages Indicates ATH Disconnect The modem has disconn...

Page 35: ...ble Frmware Upgrade Indicates that a local download of firmware or a remote cloning of firmware was successful RemClone Failed Displays on the local modem s LCD and indicates that a remote cloning of firmware has failed Remote Clone OK Displays on the local modem s LCD and indicates that a remote cloning of firmware was successful AT Command Reset Message Indicates Reset by ATcommand The modem has...

Page 36: ...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 modem did not finish answering a call disconnected because the modem rece...

Page 37: ...ory preset configurations Factory preset configurations are Async Dial Sync Dial Sync Leased UNIX Dial Cellular Mobile and Cellular PSTN If Sync Leased is selected you must choose either Answer or Originate mode 4 Press the key until the appropriate factory preset appears on the LCD and press the corresponding function key to select your choice 5 Choose Function appears and displays the Edit and S...

Page 38: ...ctory configurations 0 for Async Dial 1 for Sync Dial 2 for Sync Leased Answer 3 for UNIX Dial 4 for Sync Leased Originate 5 for Cellular Mobile 6 for Cellular PSTN NOTE F1 F2 and F4 remove AT command control The only way to return to AT command control is through the DCP as described earlier in Using the Diagnostic Control Panel DCP and Where n is one of the following storage areas 0 for Active S...

Page 39: ... available for this function Grant and Deny Grant allows any branch of the Top Level menu to be accessed from the DCP Deny allows access only to the Status branch of the Top Level menu All 3800Plus modems are shipped from the factory with DCP access granted To access the Front Panel DCP Security Access function perform the following Press the key three times Press the key twice Press the key once ...

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Page 41: ...lephone calls It also allows you to create and store up to 10 telephone numbers to directory locations Six different functions can appear under Call Setup Dial Disconnect Answer Dial Standby or Return to Dial when applicable and Change Directory NOTE The Dial Standby and Return to Dial functions only appear when the modem is in Dial Backup mode 5 ...

Page 42: ...1 5551234 F2 F3 To view other directory locations select Nxt F1 Dial Directory 01 Dialing F2 F3 Once the directory location you want appears on the LCD press the F2 or F3 key to dial the number If the connection is successful the modem is online and one of the Normal Operation status messages appears on the LCD If the connection is not successful the LCD displays one of the Call Failure status mes...

Page 43: ...F2 F3 Press the key until Answer is displayed 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 status message appears on the LCD To exit this function and remain in the Call Setup branch press the key To exit and return to the Top Level menu press the key AT Command Equivalent The AT command equivalent...

Page 44: ...all Setup Dial Standby F2 F3 Press the key until Dial Standby or Return to Dial is displayed Select the appropriate function F1 Dial Standby Command Complete F2 F3 If the modem is operating in a Dial Backup mode the Dial Standby function forces the modem to leased lines and displays the status message Command Complete Once the modem is in Dial Standby mode the Return to Dial function appears on th...

Page 45: ...phone 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 character F1 02 9 z Nxt F2 F3 Press the key to move the cursor to the next character position Continue this key seq...

Page 46: ... tandem PBX For example 9W 555 6789 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 the originating site when making a call The R parameter must be the last character in the dial string Quiet answer Wait for five seconds of silence after dialing the number If the silence is not detected the modem sends t...

Page 47: ...line connection the DTE interface and the identity for example serial number and model number of your equipment There are up to five selections under Status VF Identity DTE Options and Record Status Branch To access Status from the Top Level menu make the following selections F1 Idle 28 8 Status Test F2 F3 Press the key until Status appears Select Status 6 ...

Page 48: ...l indicates in decibels referenced to one milliwatt dBm the actual strength of the incoming signal Sig Noise Signal to Noise Ratio indicates in decibels the receive signal strength relative to noise on the line NearEcho Near End Echo displays the signal level in decibels referenced to one milliwatt dBm of that portion of the transmit signal which has been echoed back by the local line termination ...

Page 49: ... loaded in the modem HPt Hardware part number is an 11 digit number that identifies the circuit card in the modem FPt Firmware part number is an 11 digit number that identifies to service personnel the firmware release number 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 AT Command Equivalent The AT command I0 displays th...

Page 50: ... menu press the key AT Command Equivalent There is no AT command for DTE status Options The Options Status function displays all optional firmware features currently installed in the modem for example V 29 V 33 and dial network management If no firmware options are installed None_Installed appears on the LCD To access Options from the Status branch make the following sections F1 Status DTE Options...

Page 51: ...he first sequence fault 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 ...

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Page 53: ...x selections under Test Abort Self Self Test Loc Analog Loop Local Analog Loopback Rem Digital Loop Remote Digital Loopback Loc Digital Loop Local Digital Loopback and Pattern The only tests that can operate concurrently 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...

Page 54: ...akes less than a minute to complete The modem must be offline not connected with another modem otherwise Invalid Command appears This test is not valid in Remote mode and does not appear on the LCD of either modem when in Remote mode To access Self from the Test branch make the following selection F1 Test Abort Self F2 F3 Select Self All LCD cells and DCP status indicators light If the modem passe...

Page 55: ...s any function key to start this test F1 Test Local Loop Started F2 F3 The message Started appears on the LCD and the Test LED lights for the duration of the test 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 configuration option refer to the Test sect...

Page 56: ...nch make the following selections F1 Test Rem_Digital_Loop F2 F3 Press the key until Rem Digital Loop appears Press any function key to start this test F1 Test Remote Loop Started F2 F3 The message Started appears on the LCD and the Test LED lights for the duration of the test If the Test Timeout configuration option is enabled Test Timeout appears at the conclusion of the test If it is disabled t...

Page 57: ..._Loop F2 F3 Press the key until Loc Digital Loop appears Press any function key to start this test F1 Test Digitl Loop Started F2 F3 The message Started appears on the LCD and the Test LED lights If the message Invalid Command appears on the LCD then another test is in progress Select Abort to clear the current test and then select Loc Digital Loop If the Test Timeout configuration option is enabl...

Page 58: ...oopback to simulate data passing through the modem For this test to operate properly the modems must be online and in Synchronous or Asynchronous Direct mode Otherwise the message Invalid Bffr Mde appears when this test is started See Figures 7 4 through 7 6 Figure 7 4 Pattern Test and Local Analog Loopback Test Figure 7 5 Pattern Test and Remote Digital Loopback Test Figure 7 6 End to End Pattern...

Page 59: ...e value for BlksErrd if the counter 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...

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Page 61: ...cently saved changes made to any configuration options In the event of power loss 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 sets of pr...

Page 62: ...WER UP Async Dial Sync Dial Sync Leased Answer Originate UNIX Dial Cellular Mobile Cellular PSTN Load Edit Area From 494 13079 02 EDIT AREA ALLOWS YOU TO VIEW AND EDIT CONFIGURATION OPTIONS ANY CHANGES MADE TO CONFIGURATION OPTIONS ARE SAVED TO Active Saved Customer 1 OR Customer 2 Save To Active Operating Active Saved Customer 1 Customer 2 Factory Figure 8 1 DCP Configuration Process ...

Page 63: ...r 1 OR Customer 2 494 13080 02 Customer 1 ATZ1 Customer 2 ATZ2 Factory Active Saved AT W0 Customer 1 AT W1 Customer 2 AT W2 ON POWER UP Active Saved IS LOADED TO Active Operating THE AT W COMMAND IS DISABLED IF THE StrapsWhenDisc CONFIGURATION OPTION IS SET TO Reload NOTE NOTE Async Dial AT F0 Sync Dial AT F1 Sync Leased Answer AT F2 UNIX Dial AT F3 Sync Leased Originate AT F4 Cellular Mobile AT F...

Page 64: ...lular PSTN factory configuration areas are available only if ETC is installed The Configure branch consists of the following three levels Ld EditArea frm Allows the selection of the Active Operating Active Saved Customer 1 Customer 2 and Factory configuration areas Choose Function Allows you to make changes Edit to existing configuration options or write Save these changes to either the Active Sav...

Page 65: ...ion option Remote Access Password and how to save changes to a configuration area Active Saved The shaded key indicates what key to press F1 Idle 28 8 Test Configure F2 F3 Select Configure from the Top Level menu F1 Ld EditArea frm Activ Operating F2 F3 F1 Ld EditArea frm Factory F2 F3 Select the Factory configuration area F1 Ld Fact Preset Async_Dial F2 F3 Select Async_Dial F1 Choose Function Edi...

Page 66: ...ions First it indicates that more configuration options are available within that group These are accessed by selecting Nxt pressing F1 and scrolling 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...

Page 67: ...T commands Table 8 1 1 of 7 DTE Interface Configuration Options Async Sync Mode Async Nxt Async Sync Asynchronous Synchronous Mode Determines whether the modem operates in Asynchronous mode or Synchronous mode If the AT command set is enabled and this configuration option is set for Sync then the modem operates in Async mode when offline For Async Dial and UNIX Dial Async is the factory default Fo...

Page 68: ...l character size consists of an asynchronous start bit asynchronous number of data bits parity bits and asynchronous stop bits For V 25bis Bisync or HDLC operation with a V 25bis compliant DTE the number of data bits should be set to 7 The total character size for Error Control mode or Buffer mode must be 10 bits The total character size for Direct mode must be 11 bits or less There is no AT comma...

Page 69: ... the current session is terminated The setting is ignored if the modem receives a disconnect command from the SDCP or from the COMSPHERE 6700 Series NMS Off ReloadStrp Like Standard RS232 except that when DTR is lowered the modem loads the Active Saved area into the Active Operating area Off CmdMode When the modem is online and DTR is Off for longer than the period specified by the S25 register th...

Page 70: ...d ON but is turned Off for 1 to 2 seconds upon a disconnect Follows DTR When the modem receives DTR from the DTE it sends DSR to the DTE 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 Delay to Data Operation is similar to the Standard RS232 setting except that DSR does ...

Page 71: ... For Async Dial and UNIX Dial Ignore is the factory default For Sync Dial and Sync Leased Stndrd_RS232 is the factory default AT command equivalent is Rn CTS Control Forced_On Nxt Forced_On Stndrd_RS232 WinkWhenDisc Follows_DTR Clear to Send Control CTS is a signal from the modem to the DTE indicating that it can accept data from the DTE NOTE When CTS flow control or CTS RTS flow control is enable...

Page 72: ...trength drops below carrier detect threshold Forced On Forces LSD to be ON at all times Wink When Disconnect LSD is normally forced ON but can be turned Off for 1 to 2 seconds upon a disconnect This is used for UNIX DTEs Follows DTR The state of LSD follows the state of DTR When DTR turns ON LSD turns ON When DTR turns Off LSD turns Off Simulated Control Carrier LSD follows the state of RTS of the...

Page 73: ... is also known as CH on the RS 232D interface Disable Disregards CT111 Rate Control Fallback1 Forces the modem to decrease its configured data rate to the next lower data rate when CT111 is Off Valid only for V 32bis V 33 V 29 modulation Modem will only fall back within the same modulation scheme When CT111 turns ON the modem returns to its previous data rate Fallback2 Forces the modem to decrease...

Page 74: ... dialing method and protocol used by the modem The character length must be 7 data bits with even parity and 1 stop bit V 25bis Bisync Selects V 25bis Bisync as the dialing method and protocol used by the modem This is also known as character oriented protocol This framing protocol uses two synchronous control characters and a start of text control character before the text block and an end of tex...

Page 75: ...the escape sequence characters The factory default is 1 second AT command equivalent is S register S12 n BreakForceEscap Disable Nxt Disable Enable Break Forces Escape Determines whether or not the modem should enter Command mode when it receives a break character from the DTE Disable A break character is sent to the remote end Enable Modem escapes into AT Command mode and a break character is not...

Page 76: ...ync Dial Enable is the factory default For UNIX Dial EnableInOrig is the factory default AT command equivalent is Qn ExtendResltCode Enable Nxt Enable Disable Add EC Add V42 MNP Use_DTE_Rate Extended Result Codes Informational messages such as VF data rate and Error Control are displayed with the result codes For a list of Extended Result Codes refer to Table 13 1 in Chapter 13 AT Commands and S R...

Page 77: ...appears if DTE Dialer is configured for V25bis HDLC or V25bis Bisync The factory default is ASCII AT command equivalent is S register S62 n V25bis IdleFill Mark Nxt Mark Flag V 25bis Idle Fill Determines whether a mark or flag is used as an idle fill character for the DTE The modem responds to the DTE using the same idle fill NOTE This configuration option only appears if DTE Dialer is configured ...

Page 78: ...lid command within that string will not prevent the execution of subsequent valid commands No Strap or ERROR Ignores all AT commands including valid commands that cause a configuration option to change Only nonconfiguring commands for example ATD ATA and ATI are executed the ERROR result code is never returned The factory default is Normal AT command equivalent is S register S84 n DTR Cont Repeat ...

Page 79: ...e answered using either the DCP s Answer command or via AT commands The factory default is 1 AT command equivalent is Sn Dialer Type Tone Nxt Tone Pulse Dialer Type Selects either tone DTMF dialing or pulse rotary dialing mode The factory default is Tone AT command equivalents are the Dial command modifiers T and P DialTone Detect Enable Nxt Enable Disable Dial Tone Detect Sets the modem for dial ...

Page 80: ...ime out Determines the number of seconds an originating modem waits before abandoning a call attempt when no answer tone is received NOTE Although DCP selections are limited 30 45 60 or 120 values set by AT commands can display from 1 to 255 seconds The factory default is 45sec AT command equivalent is S register S7 n Fast Disconnect Disable Nxt Disable Enable Fast Disconnect Allows the modem to d...

Page 81: ...sable is the factory default AT command equivalent is Yn No Carrier Disc 2sec Nxt 2sec 5sec Disable 10sec 20sec No Carrier Disconnect If the modem no longer receives carrier from the remote modem it disconnects the call This configuration option determines how long carrier is Off before the modem disconnects Loss of carrier is one method of disconnecting a call 2 5 10 20 sec Modem disconnects if c...

Page 82: ...ransmit or Receive Auto Make Busy Disable Nxt Disable Enable Automatic Make Busy Forces the modem to go off hook under the following conditions a local analog loopback is performed a self test is performed or if the modem is switched to the service line This configuration option is valid only with the 3811Plus and does not appear on the LCD of standalone models NOTE This configuration option shoul...

Page 83: ...em will use directory location 2 in the event of call failure using directory location 1 Dirs 1 3 The modem will use directory location 3 in the event of call failure using the preceding entries S S S S Dirs 1 10 The modem will use directory location 10 in the event of call failure using the preceding entries AT command equivalent is S37 n MI MIC Dialing Disable End Disable Enable MI MIC Dialing A...

Page 84: ... 300 103J Dial Line Rate This configuration 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 Dial Line Rate sets the upper limit rate and modulation lower speed connections may still be possible What Dial Line Rate configuration options are displayed depends the setting of Modulation 33600 V34 3120...

Page 85: ...tAt48 StartAt96 Autorate Controls the modem s ability to adjust its speed upward and downward to accommodate the conditions of the VF line Enable Once connected the modem automatically lowers the line rate if line conditions become impaired When line conditions improve the modem automatically shifts up to the highest data rate the line can support limited by the value of the Dial Line Rate configu...

Page 86: ...Hz or set to 1800 Hz Disable No guard tone 550 Hz or 1800 Hz When the modem is in Answer mode it transmits the guard tone at this frequency The factory default is Disable AT command equivalent is Gn Train Time Long Nxt Long Short Train Time Controls V 34 V 32terbo V 32bis and V 32 train Determines whether minimum or maximum time durations are used during the handshaking sequence for both dial and ...

Page 87: ...ble Proactive Retrain is disabled Enable Proactive Retrain is enabled AT command equivalent is S23 n FallFwdDelay Disable End Disable 5_mins 15_mins 1_hour Fall Forward Delay Provides an initial delay before leased or dial lines are monitored for fall forward conditions After the timer expires monitoring occurs as usual Possible delay times are 5 minutes 15 minutes or 1 hour The factory default is...

Page 88: ... of the available selections and any equivalent AT commands Table 8 5 1 of 5 Leased Line Configuration Options Leased Mode Disable Nxt Disable 4 Wire Orig 4 Wire Ans 2 Wire Orig 2 Wire 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 over leased lines one ...

Page 89: ... modulation schemes are available on 2 wire or 4 wire leased lines If a fixed V 32bis rate is selected the modem can still be commanded to fall back by a remote modem 2400 V 22bis This modulation scheme is available on 2 wire and 4 wire leased lines 14400 V 33 12000 V 33 These modulation schemes are available only on 4 wire leased lines and only with modems that have the optional V 33 Leased Line ...

Page 90: ...l originate a call after 5 minutes of continuous bad line conditions 10_min The modem will originate a call after 10 minutes of continuous bad line conditions The factory default is Disable AT command equivalent is S register S46 n Rate Auto Orig Disable Nxt Disable OnFlBkTo48 OnFlBkTo72 OnFlBkTo96 OnFlBkTo120 OnFlBkTo144 OnFlBkTo168 Rate Auto Originate Initiates a dial backup call using the phone...

Page 91: ...al that the modem uses to check the quality of the leased lines is determined by the configuration option These intervals are 15 minutes 1 hour and 4 hours The normal settings cause an interruption of data flow on the dial line while the leased line connection is checked The Advanced settings allow data flow to continue without interruption while the leased line is evaluated If Advanced settings a...

Page 92: ...sabling Asymmetric Rate The factory default is Enable AT command equivalent is S register S15 n FallFwdDelay Disable End Disable 5_mins 15_mins 1_hour Fall Forward Delay Provides an initial delay before leased or dial lines are monitored for fall forward conditions After the timer expires monitoring occurs as usual Possible delay times are 5 minutes 15 minutes or 1 hour The factory default is Disa...

Page 93: ...nnect in MNP mode If this fails the modem disconnects This is also known as Reliable mode MNP or 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 MNP or Disconnect Modem attempts to connect in MNP mode If this fails the modem disconnects This is also known as Reliable mode Buffer Mode Modem does not use error c...

Page 94: ...nnect The modem attempts to establish an SDC connection If the remote modem has SDC capability then the connection is established with SDC active If the remote modem does not have SDC capability then no connection occurs and the modem generates a disconnect The AT command for SDC Negotiation is S28 n SDC Idle Fill Flag_Fill Nxt Flag_Fill Mark_Fill This configuration option only appears when the As...

Page 95: ...in transmitting a frame to its DTE until the entire frame has been received Rx_Clock The modem begins to transmit data from a DTE frame to its DTE even if the end of the DTE frame has not yet been received by the modem The receive clock circuit 115 is clamped when the beginning of a DTE frame has been transmitted to the DTE and no other data from this DTE frame has been received by the modem As so...

Page 96: ...ly of V 42bis data compression Online changes do not take effect until a disconnect occurs The factory default is Enable NOTE This configuration option is only available if Error Control Mode configuration option is set for V42 MNPorBfr V42 MNPorDsc MNP or Buffr or MNP or Disc AT command equivalent is Cn EC Negotiat Bfr Disable Nxt Disable Enable Disab Switch This configuration option only appears...

Page 97: ...CTS_to_DTE Disable XON XOFF This configuration option only appears when Async Sync Mode is configured for Async Flow Control of DTE Determines how the modem controls the flow of data from the DTE CTS to DTE Method of flow control in which the modem raises and lowers its CTS interface lead to indicate when the DTE should start and stop sending data Disable The modem cannot control the flow of data ...

Page 98: ...e setting of this option Disable Modem does not respond to XON and XOFF characters received over the VF line Also the modem will not transmit an XOFF character to the remote end if its receive buffers are full Enable Modem stops transmitting data to the remote modem if it receives an XOFF character over the VF line An XON character will enable data transmission Also the modem will transmit an XOFF...

Page 99: ...y The default is 10 seconds Disable Modem disconnects immediately without attempting to send data stored in its buffers 10 60 sec Maximum amount of time the modem tries to empty its buffers before disconnecting In both cases 10 sec and 60 sec the modem disconnects much sooner if it can empty its buffers NOTE This configuration option is not available if Error Control Mode configuration option is s...

Page 100: ...Control Mode is configured for V42 MNPorBfr V42MNPorDsc LAPM_or_Disc or LAPM_or_Bfr or when Async Sync Mode is configured for Sync and Sync Comp Mode is not configured for DirectMode Enables or disables V 42 Cellular Enhancement mode Disable The modem uses standard techniques for V 42 operation Enable Cellular enhancements are enabled The modem is still compatible with modems that do not have cell...

Page 101: ...le The DTE does not initiate remote loopback in response to the signal on Pin 21 The factory default is Disable AT command equivalent is S register S51 n DTE LL CT141 Disable Nxt Disable Enable DTE Local Loopback Controls the use of Pin 18 of the RS 232D ITU T V 24 interface by the DTE to initiate a local loopback An Abort command or test time out ends this test Enable The DTE forces the modem int...

Page 102: ...a loopback test This configuration option is used for more complex networks where multiple modems used in extended data circuits tail circuits can be commanded to loopback CAUTION Selecting an address will disable any remote loopback that can be commanded from a remote modem The DTE must now control loopback via CT140 and supply the address The factory default is Disable AT command equivalent is S...

Page 103: ...to issue AT commands to change the modem s operation for their particular call Reload No AT Change This has the same effect as Reload except that it becomes impossible to change this configuration option with an AT command and the command buffer is cleared so that A Repeat Last Command has no effect NOTE If Reload or RelodNoATChg is selected the following AT commands are disabled although the OK r...

Page 104: ...ccssPasswrd 00000000 Nxt 00000000 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 NOTE If the Access from Remote configuration option is set to Disable the password has no effect AT command equivalent is S registers S56 S57 S58 and S59 n Dir 1_Callback Di...

Page 105: ... whether an NMS DTE alarm report is generated when DTR is off Disable The state of DTR does not cause an alarm condition to be reported Enable A DTE alarm condition is reported to the NMS controller in the Device Health Status message if DTR is off for more than 10 seconds The alarm condition is reported as inactive after DTR is on for 3 seconds The factory default templates do not affect NMS DTR ...

Page 106: ...on option is configured for VF_ _DTE 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 Wait for Second Dial Tone is represented by a W in the dial command string Quiet Answer Once the answering modem is off hook it does not send an answer tone to the originating modem The originating modem enters its V...

Page 107: ...orted to the NMS controller The possible values 00 15 represent a bit map The bits are normally set using the NMS controller The value of NMS_Reporting is not affected by loading a factory default template The initial value when the modem is shipped is 00 Answer_Secur No_Answ_Sec Nxt No_Answ_Sec DTE_Only VF_ _DTE VF_w _DTE Answer Access Security Mode This configuration option is read only and cann...

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Page 109: ...e and software functions such as speaker volume reset busy out and firmware download The 3811Plus modem has the additional hardware function Service Line Control Branch To access Control from the Top Level menu make the following selections F1 Idle 28 8 Control Remote F2 F3 Press the key until Control appears Select Control 9 ...

Page 110: ...s speaker to high volume Command Complete appears on the LCD To exit Speaker and remain in the Control branch press the key To exit and return to the Top Level menu press the key AT Command Equivalent The AT commands for ON Off are M0 M1 and M2 The AT commands for volume control are L0 L1 L2 and L3 Reset Reset causes the modem to stop operation and perform a complete program restart The modem begi...

Page 111: ...dem on the service line For a connection to be established you must still use the normal dialing methods as described in Chapter 5 Call Setup Branch A service line is an extra dial line connected to a COMSPHERE 3000 Series Carrier This line is normally shared by up to eight 3811Plus modems installed in either Slots 1 8 or Slots 9 16 However by daisy chaining the service line connector of one Netwo...

Page 112: ...nnel only Clone To Remote This function allows you to transfer an exact copy of the local modem s firmware to a remote modem Before using Clone to Remote perform the following Make sure the modems have an established dial network connection using V 34 V 32terbo V 32bis or V 32 modulation or a leased line connection using either V 34 V 32terbo V 32bis or V 32 modulation Make sure the remote modem s...

Page 113: ...s Establish Remote indicating the modem is attempting to establish a Remote Cloning Download session with the remote modem If unsuccessful the modem remains in the Download Transfer mode The LCD s top line displays RemClone Failed and the bottom line displays one of the following messages Incompat Modulat The modems are connected but are using a modulation scheme other than V 34 V 33 V 32bis V 32 ...

Page 114: ...sync Dial factory template See Chapter 8 Configure Branch for information about saving and changing configuration options If you have a DTE a terminal or PC attached to your modem informational messages are displayed on it when the modem is connected These show the amount of time the download will take However a DTE is not required The download begins without any operator action When the download ...

Page 115: ...mote modem Remote DCP access is only available when using V 34 V 32terbo V 32bis or V 32 modulation schemes Remote Branch The following conditions must be met before using the Remote branch A connection using either the dial network or leased lines must be established The Access from Remote configuration option must be enabled in the remote modem The Remote Access Password configuration option mus...

Page 116: ...2 F3 Press the key until Remote appears Select Remote NOTE If a connection is not established between a local 3800Plus modem and a remote 3800Plus modem the LCD displays Remote Mode Fail No Circuit Press the key to return to the Top Level menu and dial again F1 Select Channel Secondary F2 F3 or F1 Select Channel Prim data blckd F2 F3 If operation over the secondary channel is desired press any fun...

Page 117: ...ing the Remote branch are not saved until you exit the Remote branch The following conditions can cause Remote branch access to fail The local modem is not able to communicate with the remote modem because of a poor dial network or leased line connection or the remote modem is not a COMSPHERE 3800 3900 or 3800Plus series modem If this is the case the status message No Response appears on the LCD I...

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Page 119: ...00Plus modems can store a maximum of 20 passwords A 3811Plus with the optional Password Expansion Feature can store up to 3000 passwords Each password is assigned a series of parameters that determine the type of security protocol applied to it This protocol is established in the Security branch of the Top Level menu Control of security functions is established in the Security Configuration Option...

Page 120: ...s 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 secondary dial tone or silence this choice depends on how the VF Prompt Type option is configured The originating modem detects this response and transmits its password which corresponds to a preselected...

Page 121: ...auses necessary for your call DTE Side Passwords DTE side password entry requires the originating user to supply a valid password via his 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 t...

Page 122: ...p Level menu make the following selections F1 Idle 28 8 Control Security F2 F3 Press the key until Security appears Select Security Set Access Control allows you to configure critical parameters contained within the security database table that control dial access security These parameters are protected by an Administrative Password which is an 8 digit decimal number Set Access Control contains th...

Page 123: ...PasswdTable The Password Table is the modem s security database It contains all essential information for each password stored in the modem s nonvolatile memory The information associated with each password is known as a record Records are identified by an index which is a numeric name for a single record A password s record is retrieved by entering its index The Edit Password Table group allows y...

Page 124: ...a series of LCD displays Keep the following in mind when scrolling down Edit Password Table The current function and index are displayed on the LCD s top line The LCD s bottom line displays Nxt and all selections available for the displayed security option Nxt indicates that more options are available by scrolling down It also indicates that the value displayed on the LCD is the current setting Us...

Page 125: ...ty mode is set to VF_ _DTE or VF_w _DTE special requirements apply in order to use passwords with their type set to DTE_Entry The originating caller must first enter a valid VF password If the VF password entered is configured in the security database with the type VF_plus_DTE the user is then required to enter a password configured in the database table with the type DTE_Entry In the case of VF_w...

Page 126: ...guration option set to the same value VF_ _DTE The answering modem is enabled for security The modems negotiate security using the VF side password entry technique protocol If successful and the Password Type for this particular VF password is set for VF_ _DTE a password is requested from the originating user If successful the modems connect and can pass data NOTE A call attempt fails if the answe...

Page 127: ...up Options Set Orig Sec No_OrigSec EnaOrigSec Set Originate Security Controls the security protection for origination of calls when AT commands are used The originate password must be included in all AT dial command strings if this configuration option is enabled If not included or incorrectly entered the message ERROR is returned to the DTE The Originate Security password must be defined as a DTE...

Page 128: ...il the new password value is entered Press the F1 key to save the new password value Reset Security Reset Security is the second major function within the Security branch of the Top Level menu It erases all contents of the security database table and resets all index locations to Cleared Two selections appear under Reset Security Abort Security Reset and Erase All PassWords Use Reset Security if y...

Page 129: ... The following examples illustrate two ways to enter a VF side password ATDT5551234W12345678 or ATDP5551234T 12345678 PRESS Enter 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 password VF side passwords must consist of 1 8 decimal d...

Page 130: ...c123 T9 8005551234 PRESS Enter Where ATD is the AT dial command is the start and stop dial string command interrupt characters the Originate Access password must be enclosed by these characters abc123 is the 10 alphanumeric character Originate Access password T is the Tone DTMF dial modifier Comma is a pause dial parameter 98005551234 is the phone number Database Table Examples The following examp...

Page 131: ... VF and DTE Passwords Index Password Type Assigned to 121 1 VF_Entry Denver office 131 12 VF_plus_DTE Chicago office 141 1212 VF_plus_DTE Dallas office 151 953246 VF_plus_DTE Miami office modem 1 152 46958373 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 Dalla...

Page 132: ...02 user1 DTE_Entry User A Logon ID 03 00110002 VF_plus_DTE User B Denver office 04 ralph DTE_Entry User B Logon ID 05 4695873 VF_plus_DTE Berlin office 06 guest DTE_Entry Guest Logon ID 07 4695873 VF_plus_DTE Berlin office 08 actmgr DTE_Entry Account Manager Logon ID 09 350647 VF_plus_DTE User C 10 miami DTE_Entry Miami office 11 00159766 VF_plus_DTE User D 12 miami DTE_Entry Miami office For this...

Page 133: ... must be online with a compatible fax modem or fax machine You must have configured your modem according to the specifications of your fax software manual For example Some fax software requires that the modem have Auto Answer disabled You can set this using the AutoAnswerRing configuration option under the Line Dialer branch or by issuing the ATS0 0 command Some fax software requires that the mode...

Page 134: ...mmands and the replies your modem makes such as OK may be displayed on your computer terminal during fax operation but this depends on your software You do not have to issue AT commands yourself unless you use AT commands to configure the modem For more information about fax operation see the manual that came with your fax software ...

Page 135: ... 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 maintaining a connection with the remote modem This is accomplished using the escape sequence to exit Data mode and the O command to return to Data mode Escape Sequence and Escape Guard Time The escape sequence is only issued when the modem is ...

Page 136: ...ric or word result codes unless the result codes have been disabled using the Q1 command Appendix B lists result codes with numeric and word equivalents Any Key Abort The any key abort function aborts a call establishment attempt when a character is received from the DTE under the following conditions The AT command set is enabled The modem is in the process of answering or originating a call AT C...

Page 137: ...ceded with AT or followed by pressing the Return key A Answer Mode Goes off hook and attempts to establish a connection without waiting for a ring None Bn ITU T Bell Mode Determines the protocol used if the dial line rate is set to 300 or 1200 bps It has no effect if the rate is set to another value See Bn and BLn B B0 V 21 or V 22 300 or 1200 bps B1 Bell 103 or Bell 212A 300 or 1200 bps Configure...

Page 138: ...ample 9 555 6789 or when invoking special features for example 70 W555 6789 where 70 disables Call Waiting 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 the originating site when making a call The R parameter must be the last character in the dial string For correct operation at least one ringback must...

Page 139: ...el number The model number of a 3810Plus begins with 3980 The model number of a 3811Plus begins with 3981 I5 Displays the part number of the circuit card I6 Displays the firmware release number I9 Displays 3 digit firmware revision number same as I1 I10 n Changes the value of the product code displayed by the I0 command n is a number from 0 to 4 I10 0 sets product code to 144 I10 1 sets product co...

Page 140: ...or modem to send result codes to the DTE Required for most UNIX applications Configure Edit DTE Dialer Sr n Change S Register Changes contents of S register where r is the S Register and n is the new value See Table 13 2 3800Plus S Registers None Sr Display S Register Displays value of S register where r is the S register number None T Tone Dial Sets the modem for tone dial mode Configure Edit Lin...

Page 141: ... Displays result codes with either V 42 or MNP suffix Use DTE Rate Displays DTE data rate instead of line rate Extended Result Code Configure Edit DTE Dialer Dial Tone Detect Configure Edit Line Dialer Busy Tone Detect Configure Edit Line Dialer Dial Tone Detect Enable Sets the modem for dial tone detect Disable Sets the modem for blind dialing Busy Tone Detect Enable Modem monitors for busy tone ...

Page 142: ...4 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 configuration option the DTR Action configuration option must be set to Stndrd_RS232 D1...

Page 143: ...ame Size A4 Error Control Mode N4 Auto Answer Rings S0 3 No Answer Timeout S7 120 No Carrier Disconnect S10 100 V 32bis Train S43 1 V 32bis Autorate S76 3 V 42 ARQ Window Size S89 9 Cellular Enhancements S91 1 If your modem is attached to a normal dial telephone line but sometimes communicates with a modem that is attached to a cellular phone use the F6 command F6 Cellular PSTN sets the following ...

Page 144: ...e data rate to 4800 bps S41 5 Set by F6 I100 Automatically adjusted according to the ETC1 1 specification NOTE J0 overrides this command In overrides the J0 command Configure Edit Dial Line Jn Dial Transmit Level Type J0 Permissive Approx 9 dBm NOTE J0 overrides the In command In overrides the J0 command Configure Edit Dial Line Ln Leased Mode L0 Disables leased line operation L1 2 wire originate ...

Page 145: ... AT T Exclusive dialing is enabled M236 Q236 Modem operates in Synchronous mode the DTE Dialer Type is disabled The M2 Q2 M6 Q6 M231 Q231 M236 and Q236 commands disable the use of AT commands and force the modem into Dumb mode The only way to gain control of the modem is the front panel Rn RTS Action R0 Standard RS232 RTS must be ON for the DTE to transmit to the modem R1 Ignores RTS Modem acts as...

Page 146: ...nts V0 Active Operating configuration options V1 Active Saved configuration options V2 Customer 1 configuration options V3 Customer 2 configuration options V4 Directory locations 1 10 None Wn Write Save to Memory Saves the current configuration options in Active Operating to one of three configuration areas This is required to make any configuration changes permanent W0 Saved to Active Save W1 Sav...

Page 147: ...DTE Interface Gn Modem to Modem Flow Control G0 Disable G1 Enable Configure Edit V42 MNP Buffer Kn Break Buffer Control Send Break Control Break Forces Escape Break Send Break Buffer Break Forces 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 D...

Page 148: ...o DTE Disable Q3 CTS to DTE RTS to Mdm Q4 XON XOFF Disable Q5 Disable XON XOFF Q6 Disable RTS to Mdm Configure Edit V42 MNP Buffer Tn No Data Disconnect Timer T0 Disable Tn Where n is a value from 1 to 255 in 1 minute increments Configure Edit Line Dialer Xn XON XOFF Passthrough Flow Control X0 Disable X1 Enable Configure Edit V42 MNP Buffer An Error Control Fallback Character An Where n is an ASC...

Page 149: ... B2400 V 34 max rate 2400 bps S41 40 B4800 V 34 max rate 4800 bps S41 39 B7200 V 34 max rate 7200 bps S41 38 B9600 V 34 max rate 9600 bps S41 37 B12000 V 34 max rate 12 000 bps S41 36 B14400 V 34 max rate 14 400 bps S41 35 B16800 V 34 max rate 16 800 bps S41 34 B19200 V 34 max rate 19 200 bps S41 33 B21600 V 34 max rate 21 600 bps S41 32 B24000 V 34 max rate 24 000bps S41 31 B26400 V 34 max rate 2...

Page 150: ... uses a buffered UART such as the 16550 If you experience overruns it may be that your DTE cannot handle higher DTE rates Try a lower value R300 0 300 bps R1200 1200 bps R2400 2400 bps R4800 4800 bps R7200 7200 bps R9600 9600 bps R12000 12 000 bps R14400 14 400 bps R19200 19 200 bps R28800 28 800 bps R38400 38 400 bps R57600 57 600 bps R76800 76 800 bps R115200 115 200 bps Configure Edit DTE Inter...

Page 151: ...on SC0 Disable Synchronous Data Compression mode SC1 Enable Synchronous Data Compression mode The factory setting is Disable Configure Edit V42 MNP Buffer IHn V 42bis Compression IH0 Disable IH1 Transmit only Not available from DCP IH2 Receive only Not available from DCP IH3 Transmit and Receive Equivalent to Enabled option on DCP Configure Edit V42 MNP Buffer ILn Disconnect at 300 bps IL0 Disable...

Page 152: ...ription column Table 13 2 1 of 15 3800Plus S Registers AT Command Description Front Panel Branch S0 Auto Answer Ring Number Register determines number of rings the modem will count before automatically answering a call Enter zero 0 if you do not want the modem to automatically answer any calls Otherwise enter a value from 1 255 for the number of rings to count before answering Factory setting is 1...

Page 153: ...onds an originating modem waits before abandoning a call when no answer tone is received Enter a value from 1 255 seconds Factory setting is 45 seconds Configure Edit Line Dialer S8 Pause Time for the Dial Modifier Register determines how long in seconds the modem pauses when it encounters a comma in the Dial command string Enter a value from 0 255 seconds Factory setting is 2 seconds Configure Ed...

Page 154: ...tically cancels any test in progress after the time of this register expires Any test can be manually canceled by issuing the escape sequence followed by the T0 command Enter a value from 0 255 seconds A value of 0 disables this register Factory setting is Disable 0 Configure Edit Tests S23 Proactive Retrain Register determines whether Proactive Retrain occurs Disabling Proactive Retrain reduces t...

Page 155: ... values 0 Flag_Fill 1 Mark_Fill The factory setting is Flag_Fill Configure Edit V42 MNP Buffer S30 Sync DTE Rate Identifies the synchronous DTE s operating rate to the modem Register has the following values 0 128 000 bps 1 115 200 bps 2 112 000 bps 3 96 000 bps 4 76 800 bps 5 72 000 bps 6 64 000 bps 7 57 600 bps 8 56 000 bps 9 48 000 bps 10 38 400 bps 11 28 800 bps 12 19 200 bps 13 14 400 bps 14 ...

Page 156: ... Auto Redial S35 works in conjunction with the Bad Lines Auto Originate and Rate Auto Originate options A redial attempt is made in response to a bad phone number a busy signal no answer or no quiet answer The modem must be in Originate mode Register has the following values 0 Directory Location 1 1 Directory Locations 1 2 2 Directory Locations 1 3 3 Directory Locations 1 4 S S S S 9 Directory Loc...

Page 157: ...e_Dialer S38 DTR Cont Repeat Determines whether automatic dialing of dial backup directory locations will be repeated continuously or halted after the first pass Regardless of the setting of S38 dialing is locked out after ten failed attempts to connect to the same number Register has the following values 0 Disable 1 Enable Factory setting is Disable Configure Edit DTE_Dialer S39 Receive Buffer Di...

Page 158: ...2bis V 32 6 2400 V 22bis 7 1200 V 22 8 1200 212A 10 0 300 V21 11 0 300 103J 20 19 200 V 32terbo 21 16 800 V 32terbo 27 33 600 V 34 28 31 200 V 34 29 28 800 V 34 30 26 400 V 34 31 24 000 V 34 32 21 600 V 34 33 19 200 V 34 34 16 800 V 34 35 14 400 V 34 36 12 000 V 34 37 9600 V 34 38 7200 V 34 39 4800 V 34 40 2400 V 34 Factory setting is 33 600 V 34 Configure Edit Dial Line S43 Train Time Register co...

Page 159: ... 800 V 34 28 26 400 V 34 29 24 000 V 34 30 21 600 V 34 31 19 200 V 34 32 16 800 V 34 33 14 400 V 34 34 12 000 V 34 35 9600 V 34 36 7200 V 34 37 4800 V 34 38 2400 V 34 Factory setting is 33 600 V 34 Configure Edit Leased Line S45 Leased TX Level Register determines the modem s transmit power output level over leased lines Enter a value from 0 15 dBm Factory setting is 0 dBm Configure Edit Leased Li...

Page 160: ...Leased Line S49 Transmit Buffer Disconnect Delay Determines the maximum amount of time the modem can continue to send data in its Transmit Buffer to the remote modem after it is commanded by the DTE to disconnect Register has the following values 0 Disable Immediate disconnect 1 1 second 2 2 seconds S S S S 255 255 seconds Factory setting is 10 seconds Configure Edit V42 MNP Buffer S51 DTE RL CT14...

Page 161: ... if the remote access password is 12345678 then S56 12 Configure Edit Misc S57 Remote Access Password Part 2 Register allows entry of the second pair of digits of a remote access password Any value from 00 to 99 is valid Configure Edit Misc S58 Remote Access Password Part 3 Register allows entry of the third pair of digits of a remote access password Any value from 00 to 99 is valid Configure Edit...

Page 162: ...arriage Return and Line Feed 1 Carriage Return 2 Line Feed Factory setting is carriage return and line feed CR LF Configure Edit DTE Dialer S66 NMS Call Messages Register determines if the modem sends information regarding status Call Progress and or sends summarized call statistics Call Connect to the dial network management system COMSPHERE 6700 Series NMS Register has the following values 0 Cal...

Page 163: ...ermines if Autorating is used on dial lines when connected in V 32bis or V 34 mode Register has the following values 0 Enable 1 Disable 2 Start at 4800 bps 3 Start at 9600 bps Factory setting is Enable Configure Edit Dial Line S77 DTR Alarm Reporting Register determines whether an alarm is sent to the NMS controller when the DTR signal has been off for more than 10 seconds Register has the followi...

Page 164: ...4 mode Register has the following values 0 Enable 1 Disable Factory setting is Enable Configure Edit Leased Line S83 MI MIC Dialing On Model 3811Plus only register determines if MI MIC control leads can be used to force the modem into the originate handshake after first dialing a call Register has the following values 0 Disable 1 Enable Factory setting is Disable Configure Edit Line Dialer S84 AT ...

Page 165: ...ze to be set to a value from 6 to 15 frames to accommodate satellite delays Register has the following values 0 6 frames default 1 7 frames 2 8 frames 3 9 frames S S S S 9 15 frames This command applies only to connections made using V 42bis data compression or V 42 error control Factory setting is 6 frames None S90 DTE Rate VF Rate Register forces the DTE computer data rate to be equal to the VF ...

Page 166: ... received data mode for training Enable Effective only if the V 29 feature is installed and V 29 is selected for the leased line rate Register has the following values 0 Disable 1 Enable Factory setting is Disable Configure Edit Leased Line S93 RJ11 Cellular Adapt Valid only if ETC is installed register controls support for an RJ11 connection including generation of the ETC 1 1 Calling Tone during...

Page 167: ...erview The following pages hold graphic representations of the general menu structure of the front panel or SDCP displays The model installed features and configuration options all may affect what is actually displayed at each level of the menus A ...

Page 168: ...e_Dialer AutoAnswerRing Dialer Type DialTone Detect Blind Dial Paus BusyTone Detect Pause Time NoAnswer Timout Fast Disconnect Long Space Disc No Carrier Disc No Data Disc NoDataDiscTrig Auto Make Busy MakeBusyViaDTR DTR Auto Redial MI MIC Dialing Dial_Line Modulation Dial Line Rate Automode Autorate Dial TX Level V22b Guard Tone Train Time Asymmetric Rate Proactive Retrain Fall Fwd Delay 98 14528...

Page 169: ...NMS_Call_Msgs NMS DTR Alarm NetworkPosition CellulrRJ11Adpt Security EntryWait_Time VF_Prompt_Type DTE_PW_Tries DTE_PW_TermChar DTE_PW_BkSpChar Get_User_ID NMS_Reporting Answer_Secur Originate_Secur 98 14528b 03 Does not appear if configured for Synchronous mode Only appears if Sync_Leased factory template is selected Some choices within this group may not appear depending upon how previous config...

Page 170: ...d Code Secondary Prim data blckd ExitRem appears instead of Remote when using Remote Mode Does not appear in Remote Mode Rem_Digital_Loop Loc_Digital_Loop and Pattern appear if the secondary channel is used Security Set_Access_Ctrl Admin Password Reset_Security EditPassWdTable Set_Answer_Sec Set_Orig_Secur Set_Admin_PsWd 98 14528c 03 from previous page ...

Page 171: ...dem receiving a ring voltage from the VF line 3 3 NO CARRIER Modem lost or does not detect carrier signal or does not detect answer tone 4 4 ERROR Invalid command 5 5 CONNECT 1200 Connection at 1200 bps 6 6 NO DIALTONE No dial tone detected 7 7 BUSY Busy or trunk busy signal detected 8 8 NO ANSWER No quiet answer 10 10 CONNECT 2400 Connection at 2400 bps 11 11 CONNECT 4800 Connection at 4800 bps 1...

Page 172: ...ONNECT 1200 EC Connection at 1200 bps with error control 28 28 CONNECT 38400 Connection at 38 400 bps 29 14 CONNECT 19200 EC Connection at 19 200 bps with error control 30 30 CONNECT 57600 Connection at 57 600 bps 32 32 CONNECT 76800 Connection at 76 800 bps 34 34 CONNECT 115200 Connection at 115 200 bps 37 37 CONNECT 21600 Connection at 21 600 bps 38 38 CONNECT 24000 Connection at 24 000 bps 39 3...

Page 173: ...control 46 46 CONNECT 28800 EC Connection at 28 800 bps with error control 47 47 CONNECT 31200 EC Connection at 31 200 bps with error control 48 48 CONNECT 33600 EC Connection at 33 600 bps with error control Appears when the Extended Result Codes configuration option is set for Add EC If this configuration option is set for Add V42 MNP then V42b V42 MNP5 MNP4 MNP3 MNP2 or NoEC appears For either ...

Page 174: ...COMSPHERE 3800Plus Modems B 4 October 1998 3980 A2 GB30 40 This page intentionally left blank ...

Page 175: ...esentative Table C 1 Modem Integrity Symptom Action Modem did not pass power up self test Contact your service representative Power LED does not light LCD does not display Make sure the modem s ON Off switch is in the ON position Make sure the ac power transformer is connected to the ac power receptacle If Power LED and or LCD do not operate contact your service representative A problem is suspect...

Page 176: ...hat the ASCII value of a carriage return matches what is used by the DTE and the modem Refer to DTE Dialer in Chapter 8 or the S3 register in Chapter 13 Verify that the DTE has a valid character format Valid format consists of 8 data bits with no parity or 7 data bits with even odd mark or space parity Verify that your equipment can support the DTE data rate Refer to Async DTE Rate configuration o...

Page 177: ...ontrol characters and a start of text control character before the text block and an end of text control character after the text block If using V 25bis HDLC verify that the correct character format uses flag address and control characters before the text block and a frame sequence check and flag after the text block Modem dials but does not connect If the modem is operating behind a PBX verify if...

Page 178: ...the other is configured for Originate mode Verify that both modems are using the same modulation scheme Verify that modems are configured 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 Modems are configured for dial backup but do not switch to dial lines if leased lines fail Verify that both modems have the ...

Page 179: ...z only FCC Part 15 Class A FCC Part 68 Registration Number See label on modem UL 3810Plus Model 3980 Listed to UL 1950 3811Plus Model 3981 Recognized to UL 1950 with COMSPHERE 3000 Series Carrier CSA 3810Plus Model 3980 Certified to CSA C22 2 No 950 M89 3811Plus Model 3981 Certified as a component to CSA C22 2 No 950 M89 with COMSPHERE 3000 Series Carrier DOC 3810Plus Model 3980 3811Plus Model 398...

Page 180: ...4 400 12 000 9600 7200 4800 bps ITU T V 32 9600 4800 bps ITU T V 33 14 400 12 000 bps optional ITU T V 29 9600 7200 4800 bps optional ITU T V 22bis 2400 bps FAX MODULATIONS ITU T V 17 14 400 bps ITU T V 29 9600 7200 bps ITU T V 27ter 4800 2400 bps DATA RATES Dial Line 33 600 31 200 28 800 26 400 24 000 21 600 19 200 16 800 14 400 12 000 9600 7200 4800 2400 1200 or 300 0 bps Leased Line 33 600 31 2...

Page 181: ...without power supply 1 0 pounds 0 45 kg 3811Plus Height 2 1 inches 5 4 cm 3810Plus 7 1 inches 18 1 cm 3811Plus Width 7 6 inches 19 4 cm 3810Plus 1 8 inches 4 6 cm 3811Plus Depth 12 1 inches 30 8 cm 3810Plus 13 4 inches 34 0 cm 3811Plus TRANSMIT LEVEL Dial Line Permissive 9 dBm Selectable 32 dBm through 10 dBm optional ETC 1 0 ETC 1 1 Leased Line 0 through 15 dBm in 1 dBm decrements TELEPHONE INTER...

Page 182: ...COMSPHERE 3800Plus Modems D 4 October 1998 3980 A2 GB30 40 This page intentionally left blank ...

Page 183: ...E 1 3980 A2 GB30 40 October 1998 Pin Assignments Appendix E lists the pin assignments for EIA 232 D and VF TELCO interfaces and shows the wiring diagram for an 8 position to 6 position cable E ...

Page 184: ...und 8 LSD CF 109 DCE Line Signal Detect 9 10V Reserved for test purposes may be used to drive one RS 232 load 10 10V 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 ...

Page 185: ...ks and the pin assignments for the TELCO jacks Figure E 1 Table E 2 VF Connector Pin Assignments Pin Leased Dial Leased Type of Telco Jack Pin Leased Dial Leased RJ11 JM8 1 4 Wire TX 2 Wire TX RX Ring 1 2 4 Wire TX 2 Wire TX RX Tip 1 3 4 Ring 2 Wire Leased Ring 5 Tip 2 wire Leased Tip 6 7 4 Wire RX Tip 8 4 Wire RX Ring Figure E 1 VF Pin Orientation ...

Page 186: ...II Tariff 260 service There is a substantial difference in 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 1 ...

Page 187: ...nfigured for V 25bis dialing Refer to DTE Dialer Type configuration option in Chapter 8 Configure Branch Call Request Commands Call Request commands are issued from the DTE to the modem and are responsible for initiating any dial calls Call Request commands include Call Request with Number Provided CRN and Call Request with Stored Memory Address Provided CRS Call Request with Number Provided CRN T...

Page 188: ...ilar to the AT result code CONNECT The CNX response format is CNX Call Answer Commands Call Answer commands disable or enable the modem s AutoAnswer function These commands are issued from the DTE Call Answer commands include Incoming Call INC Disregard Incoming Call DIC and Connect Incoming Call CIC Incoming Call INC The INC response informs the DTE that the modem has detected a ring tone At this...

Page 189: ...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 is displayed If no directory location is specified then all telephone numbers stored in memory are displayed The LSN response format is LSNx n Where x is the directory location n is the telephone number Command Response A Command Response indicates that the command...

Page 190: ...ication RING DIC Disregard Incoming Call NONE CIC Connect Incoming Call ATA PROGRAM COMMAND PRN Program Normal AT Z LIST REQUEST RLN Request to List Stored Number NONE Table F 2 V 25bis Response Messages V 25bis Command Description AT Command S Register Equivalent CALL RESPONSE CFI Call Failure Indication BUSY NO ANSWER NO CARRIER NO DIAL TONE ERROR CNX Call Connecting Indication CONNECT LIST RESP...

Page 191: ...ions Configuration Option Async Dial and UNIX Dial Default Settings Sync Dial Default Settings Sync Leased Answer Originate Mode Default Settings DTE INTERFACE Async Sync Mode Async DTE Rate Data Bits Parity Bit Stop Bits DTR Action DSR Control RTS Action CTS Control RTS CTS Delay LSD Control TX Clock Source CT111 Rate Control DTE Rate VF Rate Async 19 200 bps 8 None 1 Ignore Forced ON Ignore Forc...

Page 192: ... In Originate1 Enable Words N A N A N A Normal Disable N A N A N A N A N A N A N A N A N A N A N A N A N A N A Disable N A N A N A N A N A N A N A N A N A N A N A N A N A N A LINE DIALER Auto Answer Ring Count Dialer Type Dial Tone Detect Blind Dial Pause Busy Tone Detect Pause Time No Answer Timeout Fast Disconnect Long Space Disconnect No Carrier Disconnect No Data Disconnect Auto Make Busy 3811...

Page 193: ...g Enable Disable V 34 33600 V34 Enable Enable Permissive 9 dBm Disable Long Enable Disable V 34 33600 V34 N A Enable Permissive 9 dBm Disable Long Enable Disable LEASED LINE Leased Mode Modulation Leased Line Rate Autorate Leased Transmit Level BadLn Auto Orig Rate Auto Orig Auto Redial Auto Dial Standby Carrier On Level Asymmetric rate Fall Forward Delay N A N A N A N A N A N A N A N A N A N A N ...

Page 194: ... N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A TESTS DTE RL CT140 DTE LL CT141 Test Timeout Receive Remote Loopback V 54 Address V 54 Device Type Disable Disable Disable Enable Disable N A Disable Disable Disable Enable Disable N A Disable Disable Disable Enable Disable N A MISC Straps When Disconnect2 Speaker Control Speaker Volume Access from Remote2...

Page 195: ...CURITY Entry Wait Time2 VF Prompt Type2 DTE Password Tries2 DTE Password Termination Character2 Password Backspace Character2 Answer Security Mode2 Originate Security Mode2 20 sec 2nd Dial Tone 1 013 ASCII 008 ASCII No_Answ_Sec No_OrigSec 20 sec 2nd Dial Tone 1 013 ASCII 008 ASCII No_Answ_Sec No_OrigSec 20 sec 2nd Dial Tone 1 013 ASCII 008 ASCII No_Answ_Sec No_OrigSec 2 This configuration option i...

Page 196: ...COMSPHERE 3800Plus Modems G 6 October 1998 3980 A2 GB30 40 This page intentionally left blank ...

Page 197: ...y Feature for 3811Plus modems only 3980 C1 004 Synchronous Data Compression SDC Feature 3980 F1 700 Enhanced Throughput Cellular ETC Feature 3981 C1 010 User s Guide 3980 M1 001 6 position 4 wire modular cord 7 foot length 125 0067 0031 8 position 8 wire modular cord 14 foot length 125 0053 1431 8 position to 6 position JM8 to RJ11 crossover modular cable 125 0054 1531 Power Supply 110 v 327 0073 ...

Page 198: ...COMSPHERE 3800Plus Modems H 2 October 1998 3980 A2 GB30 40 This page intentionally left blank ...

Page 199: ...ze of data packets as equal to 4096 bytes If the modem has the SDC Delay Min configuration option set to Rx_Clock there is no limitation on the DTE frame size for the DTE frames transmitted from the remote modem to this local modem since the whole frame need not be buffered The SyncDTE CRC configuration option determines whether the CRC of the DTE frame the FCS field is transmitted If the CRC type...

Page 200: ...e DTE flow Hardware signal CTS circuit 106 Transmit clock circuit 114 If the transmit clock is clamped then the DTE stops sending data This method only works when the transmit clock is provided by the modem Natural flow control Some DTEs can only send a limited number of information frames without any acknowledgment from the remote DTE This number is the acknowledgment window size If the DCE buffe...

Page 201: ...ring modem waits indefinitely for an EC negotiation sequence with an SDC request parameter Data cannot be successfully transmitted Table I 2 SDC Performance Measurements Group DTE Rate Compression Ratio Line Efficiency TX The number of bits per second received from the DTE This number takes into account only the data between the opening and closing flags of the HDLC frames Flags and DTE interframe...

Page 202: ...cent Set it to the maximum possible value DTE frame size configuration parameter If SDC modems are used between synchronous DTEs then the DCE frame size and not the DTE frame size must take into account the line error rate Set the DTE frame size to as large a value as your DTE and your DTE application can handle This reduces the significance of DTE frame overhead and reduces the delay expressed in...

Page 203: ...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 that AT Commands are issued A group of commands issued from an asynchronous DTE that allow control of the modem while in Command mode All commands must begin with the characters ...

Page 204: ...ls and save telephone numbers to directory locations The rack mounting that contains 17 slots 1 control slot and 16 device slots 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 comm...

Page 205: ...ired to establish maintain and end a connection It also provides the signal conversion required for communication between the DTE and the network Diagnostic Control 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 proc...

Page 206: ...odem to send and receive facsimile images Federal Communications Commission The Board of Commissioners that regulates all electrical communications that originate in the United States A process in which devices stop and start the flow of data in a network to avoid losing data The portion of a device that continuously provides status information about the device s operation and allows an operator t...

Page 207: ...ne problem Line Signal Detect A signal between the DTE and the device indicating energy exists on the transmission circuit The structure containing the menu hierarchy starting at a Top Level menu and extending down to various device functions Microcom Networking Protocol Levels 2 4 of this protocol similar to ITU V 42 detect and correct data errors caused by telephone line noise and signal distort...

Page 208: ...ints Also known as dial network One of two dialing methods in which telephone numbers are sent as pulses brief changes in voltage or current intensity across the telephone line Rotary telephones use pulse dialing A part of the device s memory that holds stored values Files devices and users not attached to your local DTE A test that sends a signal to the remote modem to test the local modem the re...

Page 209: ...the network when it is operating a peak capacity The starting point of the menu tree that displays second level menu branches A process where two modems try to establish a connection over the telephone voice frequency line An operating system developed at AT T Bell Laboratories and since used as the basis of similar operating systems A factory preset configuration area containing the configuration...

Page 210: ...or synchronous data over leased lines or dial networks at 33 600 31 200 28 800 26 400 24 000 21 600 19 200 16 800 14 400 12 000 9600 7200 4800 2400 bps An ITU T standard for error control protocol An ITU T standard for data compression A proprietary Synchronous Data Compression and error correction technique An ITU T standard for local and remote diagnostic loopback tests Voice Frequency The part ...

Page 211: ...ore Telephone Numbers 5 5 13 12 A Error Control Fallback Character 8 37 13 14 C MNP5 Compression 8 36 13 15 FCLASS Service Class Selection 13 8 A Maximum Frame Size 8 40 13 13 C Error Control Negotiate Buffer 8 36 13 13 D CTS Control 8 11 13 13 G Modem to Modem Flow Control 8 38 13 13 K Break Buffer Control Send Break Control Break Forces Escape 8 15 8 38 8 39 13 13 N Error Control Mode 8 33 13 13...

Page 212: ... 13 12 Configure branch 8 4 connect messages B 1 connection ac power 2 4 COMSPHERE 6700 Series NMS 2 5 dial line 2 4 DTE 2 3 leased line 2 4 Control branch 9 1 CT111 Rate Control 8 13 13 27 CTS Control D 8 11 13 13 Customer configuration areas 8 1 D D Lead signaling 8 23 Data Bits 8 8 Data mode 13 1 data rates suppported D 2 DCP Diagnostic Control Panel 2 1 description 4 1 Hidden Choice Indicators...

Page 213: ...iguration area 8 1 factory default templates 4 11 8 1 Fall Forward Delay 8 27 8 32 Fast Disconnect 8 20 fax FCLASS command 13 8 modulations supported D 2 operation 12 1 types supported 1 2 12 1 features 1 1 firmware download 9 6 firmware release number 13 5 firmware upgrade 9 4 9 6 flow control modem to modem 13 13 of modem and DTE 8 37 13 14 XON XOFF 8 37 13 14 Flow Control of DTE 8 37 Flow Contr...

Page 214: ...nch 7 6 pause during dialing 13 4 Pause Time for dial modifier 8 20 PBX C 3 pin assignments EIA 232 D E 2 VF Connector E 3 power consumption D 3 power up procedure 2 5 primary channel 10 2 Proactive Retrain 8 27 S23 13 20 Q quiet answer 13 4 R Rate Auto Originate 8 30 Receive Buffer Disconnect Delay 8 39 Receive Remote Loopback 8 41 Record Status branch 6 4 redialing automatic 8 18 8 23 8 31 13 23...

Page 215: ...82 Autorate 8 29 13 30 S83 MI MIC Dialing 8 23 13 30 S84 AT Command Mode 8 18 13 30 S85 Fast Disconnect 8 20 13 30 S88 Straps When Disconnected 8 43 13 31 S89 V 42 ARQ Window Size Increase 13 31 S90 DTE Rate VF Rate 8 13 13 31 S91 Cellular Enhancements 8 40 13 31 S92 V 29 Train On Data 13 32 S93 Cellular RJ11 Adapt 8 45 13 32 SDCP Shared Diagnostic Control Panel 3 1 SDLC 8 34 SDU Shared Diagnostic...

Page 216: ...ARQ WIndow Size 13 31 V 42bis Compression 8 36 V 54 Address 8 42 13 27 V 54 Device Type 8 42 13 27 VF line requirements D 3 VF Prompt Type 8 46 VF rate 13 24 B BL commands 13 15 ITU T Bell Mode 13 3 VF rates supported D 2 VF status 6 2 view configuration options V 13 12 W wait for dial tone W or 13 4 X XON XOFF Passthrough 8 38 ...

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