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Index-1

3825-A2-GB30-20

November 1996

Index

Symbols

! (hook flash), 4-4
“,” dial modifier (Pause), 4-4
“,” Pause Time (S8), 4-18
“;” (return to command mode), 4-4
@ (quiet answer), 4-4

Numbers

3825Plus modem

AT commands, 4-2
description, 1-1
features, 1-1
operating modes, 4-1
S-registers, 4-17

A

A/ (Repeat Last Command), 4-3
ac power, 2-3
Administration Password

%SA command (Enter), 4-29
%SA= command (Change), 4-29
described, 4-27

Answer mode (ATA), 4-3
Answer Security (S68), 4-30
Asymmetric Rate Mode, 4-18
Async/Sync Mode (AT&M), 4-11
AT Command Mode (S84), 4-25
AT commands, 4-2

″

F (Clear Error Buffer), 4-7

″

H (V.42bis Compression), 4-7

&&P1 (Clone Remote), 4-8
&C (LSD Control), 4-8
&D (DTR Action), 4-8
&F (Factory Defaults), 4-9
&G (V.22bis Guard Tone), 4-9
&I (Dial Transmit Level), 4-10
&J (Dial Transmit Type), 4-10
&L (Leased Mode), 4-10
&M (Async/Sync Mode and DTE Dialer Type), 4-11
&Q (Async/Sync Mode and DTE Dialer Type), 4-11

&R (RTS Action), 4-11
&S (DSR Control), 4-12
&T (Tests), 4-12
&V (View Configuration Options), 4-12
&W (Write to Memory), 4-12
&X (Transmit Clock Source), 4-13
&Z (Store Telephone Number), 4-13
%A (Error Control Fallback Character), 4-13
%B (Modulation/Data Rate), 4-13–4-15
%C (MNP5 Data Compression), 4-14
%SA (Enter Administration Password), 4-29
%SA= (Change Administration Password), 4-29
%SB (Set VF+DTE Password), 4-29
%SD (Set DTE Password), 4-29
%SP (Display Password), 4-29
%SP= (Clear Password), 4-29
%SR (Reset Security), 4-29
%SV (Set VF Password), 4-29
+FCLASS (Service Class Selection), 4-14
*** (Command Recovery), 4-3
\A (Maximum Frame Size), 4-14
\C (Error Control Negotiate Buffer), 4-14
\D (CTS Control), 4-14
\G (Modem to Modem Flow Control), 4-14
\K (Break Buffer Control, Send Break Control, Break

Forces Escape), 4-15

\N (Error Control Mode), 4-15
\Q (Flow Control of DTE and Modem), 4-15
\T (No Data Disconnect Timer), 4-16
\X (XON/XOFF Passthrough Flow Control), 4-16
A (Answer Mode), 4-3
B (CCITT/Bell Mode), 4-3
D (Dial), 4-4
DS (Dial Stored Number), 4-4
E (Command Echo), 4-4
H (Hook Switch Control), 4-5
I (Identification), 4-5
L (Speaker Volume), 4-5
M (Speaker On/Off), 4-5
O (Online Mode), 4-5
Q (Result Codes), 4-6
recovering use of, 2-5
Sn? (Display S-register), 4-6
Sn=r (Change S-register), 4-6
V (Result Codes Format), 4-6

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Summary of Contents for COMSPHERE 3825Plus

Page 1: ...COMSPHERE 3825PLUS MODEM USER S GUIDE Document No 3825 A2 GB30 20 November 1996 ...

Page 2: ...he other end of the power cord into a 110 Vac power outlet Turn on your modem and your PC B Get your QuickLink II Fax software ready C Get yourself ready A Get your modem ready 2 From the Microsoft Windows Program Manager select File Run and then type a install or b install if you are using drive B at the command line Under DOS type at the C prompt Press Enter 3 Follow the instructions the install...

Page 3: ...ternet 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 International call 813 530 2340 Trademarks All products and services mentioned herein are the trademarks service marks registered trademarks or registered service mar...

Page 4: ...the 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 ...

Page 5: ...COMSPHERE 3825Plus Modem C November 1996 3825 A2 GB30 20 Notices ...

Page 6: ... advance notice in order for you to make the necessary modifications in order to maintain uninterrupted service 6 If you experience trouble with this equipment please contact your sales or service representative as appropriate for repair or warranty information If the product needs to be returned to the company service center for repair contact them directly for return instructions using one of th...

Page 7: ...ion of service in some situations Repairs to certified equipment should be made 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...

Page 8: ...a nominal frequency of 2280 Hz and may be connected to multipoint or point to point circuits The apparatus does not require signalling or otherwise use the frequency range 0 200 Hz No d c interaction is intended between the modem and the telephone network This apparatus may be directly connected to a speechband circuit or connected to a relevant branch system for speechband circuits Connection to ...

Page 9: ...a When used near a radio or TV receiver it may become the cause of radio interference Read the instructions for correct handling Restrictions Due to JATE Japan Approvals Institute for Telecommunications Equipment regulations only 3 attempts to dial a number are permitted in a 3 minute period If a fourth attempt is made to dial the same number the modem returns the ERROR return code This restrictio...

Page 10: ...3825Plus Modem Installation Overview 2 1 3825Plus Modem Package 2 1 3825Plus Installation 2 2 DTE Connection 2 3 Dial Line Connection 2 3 2 Wire Leased Line Connection 2 3 Telephone Connection 2 3 AC Power Transformer Connection 2 3 Communications Software Installation 2 3 Modem Power Up 2 4 Selecting Factory Configuration Options 2 4 Recovering AT Commands 2 5 Initialization Strings 2 6 3 Fax Ope...

Page 11: ...Command Guidelines 4 2 AT Command List 4 2 S Register List 4 17 Security 4 27 5 Remote Access Overview 5 1 Remote Access 5 1 A Result Codes Overview A 1 B Troubleshooting Overview B 1 Automatic Firmware Download B 5 C Technical Specifications D Pin Assignments EIA 232 E Pin Assignments D 1 JM8 to RJ11 Crossover Cable D 2 ...

Page 12: ...ses Overview E 1 Call Request Commands E 2 Call Response E 2 Call Answer Commands E 3 Program Normal PRN E 3 Request List of Stored Numbers RLN E 3 List Stored Number Response LSN E 3 Command Response E 4 F Country Specific Configuration Options Configuration Options by Country F 1 Glossary Index ...

Page 13: ...er Chapter 5 shows how to use the Diagnostic Control Panel DCP of a COMSPHERE modem to access and control a remote 3825Plus modem Appendix A lists result codes produced by the modem Appendix B provides instructions for performing diagnostic tests when data communications problems occur and explains the Automatic Firmware Download process Appendix C lists the technical specifications of the 3825Plu...

Page 14: ...l over modem configuration dialing and diagnostics The modem offers two preset factory configurations containing the most often used modem settings These factory presets provide quick configuration for any asynchronous or UNIX hardware based dial environment Features The 3825Plus modem has a wide variety of features including Dial Line Modulations Proprietary extensions of V 34 33 600 and 31 200 b...

Page 15: ...p to 10 telephone numbers to directory locations Originate Security and three Answer Security modes Callback Security with telephone directory index or telephone number Two factory defined configurations and two user defined configuration areas 3825Plus Modem Front Panel and Status Indicators The front panel of the 3825Plus modem is equipped with 8 LEDs status indicators that monitor modem activit...

Page 16: ...f transferring received data to the DTE OH APL green Off Hook Analog Private Line ON The modem is off hook and set for Dial Off The modem is on hook and set for Dial Slow Flashing Modem is set for Leased APL RD green Receive Data ON Received data is being transferred to the DTE SD green Send Data ON The modem is receiving data from the DTE to transmit TR green Terminal Ready ON The DTE has turned ...

Page 17: ...trings for unique applications 3825Plus Modem Package After opening the modem s package check for damage and verify that the following items are present This user s guide 3825Plus modem Power transformer One 6 position 4 wire modular cord Fax software and documentation If any hardware components are damaged notify your sales representative Return equipment using the procedures described in the Gov...

Page 18: ... outlet The distance between your modem and DTE computer or terminal should not exceed 50 feet if DTE data rates exceed 19 200 bps The rear panel of the 3825Plus modem Figure 2 1 has the following switches and connectors An ON Off power switch A power receptacle for ac power transformer A 25 pin DB 25 receptacle for your computer A 6 pin modular jack for external telephone set use only A 6 pin mod...

Page 19: ...ck labeled LINE Figure 2 1 2 Insert the other end of the modular cord into the leased line network interface Telephone Connection Use the following procedure to connect the modem to a single line or two line telephone Procedure 1 Insert the 6 position 4 conductor modular plug into the jack labeled PHONE 2 Insert the other end of the modular cord into the telephone AC Power Transformer Connection U...

Page 20: ...options stored in memory If UNIX Dial Cellular Mobile or Cellular PSTN is more appropriate for your configuration then you must change the factory setting as described as follows NOTE If you have already changed certain configuration options you may have lost AT command control For example operating in Synchronous mode or disabling AT commands results in an inability to change configuration option...

Page 21: ... personal computer are listed in the following section Read through these procedures before performing a recovery 1 Turn the modem Off and then ON The modem performs a power up self test in which all LEDs light While this is running repeatedly press the A key of your DTE s keyboard or keep the key depressed if your keyboard automatically repeats characters that way Keep doing this until A s or a s...

Page 22: ...end of an initialization string V 25bis Applications For V 25bis HDLC High level Data Link Control dial line operation create an initialization string with the following commands Note that the character format can be 8 data bits no parity and 1 stop bit 7 data bits odd parity and 1 stop bit or 7 data bits even parity and 1 stop bit TYPE AT F D1 S1 M234 W PRESS Enter For V 25bis bisync operation cr...

Page 23: ...odulations Before you can send or receive a fax the following must be true Your modem must be online with a compatible fax modem or fax machine You must have fax software installed on your computer 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 with the ...

Page 24: ...switch to Data mode Data mode is a state where any entries made from the DTE are considered data and are transmitted and received 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 th...

Page 25: ...ommand string Commands must be entered on one line and end with the return character Enter key Commands with the suffix n have several options associated with them For example in the Ln command L1 sets the speaker volume to Low and L3 sets the speaker volume to High Omitting the suffix has the same effect as using a zero suffix for example ATX is equivalent to ATX0 The A command without pressing t...

Page 26: ...ompletion of a power up self test Refer to the Recovering AT Commands section in Chapter 2 for procedures and guidelines on this command A Repeat Last Command Reexecutes the last command string Not to be preceded with AT or followed by pressing the Enter key A Answer Mode Allows the modem to go off hook and attempts to establish a connection without waiting for a ring B CCITT Bell Mode Determines ...

Page 27: ...ugh a tandem PBX for example 9W555 6789 or when invoking special features for example 70 W555 6789 where 70 is the local telephone company command that 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 ...

Page 28: ...e product I I0 Displays product code default is 144 I1 Displays 3 digit firmware revision number I2 Performs an EPROM check I3 Displays serial number I4 Displays model number I5 Displays hardware part number I6 Displays software part number I9 Displays 3 digit firmware revision number same as I1 I10 Allows you to change the value displayed by I0 I10 0 causes I0 to display 144 default I10 1 causes ...

Page 29: ...words or as numeric codes Some DTEs do not recognize result codes as words therefore numbers are required The Numbers 2 format is required for some modem pooling applications Refer to Table A 1 for a list of result codes V V0 Displays result codes in Number 1 format digits V1 Displays result codes as text V2 Displays result codes in Number 2 format digits Xn Extended Result Code Dial Tone Detect a...

Page 30: ...ors for busy tone Yn Long Space Disconnect Determines the modem s response to a continuous spacing condition sent from the remote modem when it goes on hook Issuing a long space is one method of disconnecting a call Y Y0 Disable Ignores long space Y1 Enable Disconnects if long space is detected Enables transmission of a long space Zn Reset and Load Active Z Z0 Loads configuration options from Acti...

Page 31: ...ink When Disconnect LSD normally forced ON turns Off for approximately one second upon disconnecting C3 Follows DTR State of LSD follows state of DTR C4 Simulated Control Carrier State of LSD follows state of remote modem s RTS via V 13 simulated control carrier signaling Note that the remote modem s RTS Action configuration option must be set to Simulated Control Carrier C5 DTR Disconnect Off Sta...

Page 32: ... 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 configuration options AT Command Option Value Transmit Level I99 Error Control Mode ...

Page 33: ... dBm Default for Germany and Japan I16 16 dBm Set by F5 D D D D I32 32 dBm 16 dBm to 32 dBm invalid for all country codes except North America See Appendix F I99 Automatically adjusted according to the ETC1 0 specification Set by F6 Use only with remote modems set to I99 and limit the data rate to 4800 bps S41 5 I100 Automatically adjusted according to the ETC1 1 specification Jn Dial Transmit Typ...

Page 34: ...4 Q234 Modem operates in Synchronous mode and uses V 25bis HDLC dialing M235 Q235 Modem operates in Asynchronous mode and enables a subset of the AT T command set This is required for AT T DATAKIT dial out applications The M2 M231 through M235 Q2 and Q231 through Q235 commands disable the use of AT commands and force the modem into Dumb mode The only way to regain control of the modem is to recove...

Page 35: ... in Direct mode T2 Pattern Transmits and receives a 511 Bit Error Rate Test BERT The modem must be online and in Direct mode T3 Local Digital Loopback test The modem must be online and in Direct mode T4 Enables Receive Remote Loopback Response configuration option T5 Disables Receive Remote Loopback Response configuration option T6 Remote Digital Loopback test The modem must be online and in Direc...

Page 36: ...e effect until a disconnect occurs An Where n is an ASCII value from 0 to 127 Factory default is 013 ASCII carriage return Bn BLn Modulation Data Rate Sets the modulation and maximum dial VF rate The same function can be performed with S register S41 the B and BL commands are provided for compatibility with environments where those commands are used The B300 and B1200 commands work in conjunction ...

Page 37: ...ller value is specified it will default to 64 A A0 64 A1 128 A2 192 A3 256 A4 32 A5 16 F5 sets this to A4 Cn Error Control Negotiate Buffer Determines if the answering modem buffers the data that it received from the remote modem during an interval in which the modem attempts to establish a connection using error control Online changes to this configuration option do not take effect until a discon...

Page 38: ...he modem should enter Command mode when it receives a break character from the DTE Nn Error Control Mode Determines the type of error control used by the modem In most cases V42 MNPorBfr is the best choice If V 42bis and MNP are enabled then the modem uses the following priority for error control negotiation V 42bis V 42 MNP 5 and below Online changes do not take effect until a disconnect occurs N...

Page 39: ...te increments Xn XON XOFF Passthrough Flow Control The way this configuration option functions depends on how the modem is configured for flow control When the modem is configured for XON XOFF flow control see Qn Flow Control of DTE this configuration option determines if flow control characters received from the local DTE will be passed on to the remote modem If configured for modem to modem flow...

Page 40: ... 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 Note that if disabled the modem can only answer with an ATA command The factory setting is 1 for Denmark Finland Germany Japan Netherlands North America Norway Sin...

Page 41: ... and Turkey 60 seconds for Denmark Germany Netherlands and UK and 90 seconds for Switzerland See Appendix F S8 Pause Time for the Dial Modifier 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 The factory setting is 2 seconds for all countries except Sweden for which the factory setting is 0 Disabled See Appendix...

Page 42: ... this register The factory setting is Disable 0 S26 RTS to CTS Delay Sets the length of time in 10 millisecond increments the modem waits after receiving RTS before issuing CTS to the DTE Enter a value from 0 255 The factory setting is 0 milliseconds S39 Receive Buffer Disconnect Delay Determines the maximum amount of time the modem can continue to send data in its Receive Buffer to the DTE after ...

Page 43: ...A invalid for UK 10 0 300 V21 11 0 300 103J invalid for UK 20 19 200 V 32terbo 21 16 800 V 32terbo 27 33 600 V 34 proprietary extension 28 31 200 V 34 proprietary extension 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 The factory setting is 28 800 V 34 S43 Train Time Regis...

Page 44: ...34 36 7200 V 34 37 4800 V 34 38 2400 V 34 NOTE Turn your modem off and on after setting S44 for the setting to take effect The factory setting is 28 800 V 34 S45 Leased Line Transmit Level Level determines the modem s transmit power output level over leased lines Enter a value from 0 15 dBm The factory setting is 0 dBm for North America 1 dBm for Turkey 7 dBm for Belgium and Singapore 9 dBm for Sw...

Page 45: ...t 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 12 The value of S56 is not affected by factory default templates 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 The value of S57 is not affected by factory default t...

Page 46: ... Enable 8 msec for Japan North America Singapore and UK Enable 90 msec for Belgium Denmark Finland Netherlands Sweden Switzerland and Turkey and Disable for France Germany and Norway See Appendix F 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 COMSPHE...

Page 47: ...quality Register has the following values 0 Enable 1 Disable 2 Start at 4800 bps V 32bis only 3 Start at 9600 bps V 32bis only The factory setting is enable S77 DTR Alarm Reporting Register determines whether an alarm is sent to the 6800 Series Network Management System controller when the DTR signal has been Off for more than 10 seconds Register has the following values 0 Disable 1 Enable The val...

Page 48: ...lid and invalid AT commands The selections No ERROR and No Strap or ERROR permit installation into applications that are customized for a different modem Register has the following values 0 Normal 1 No ERROR The modem executes all valid commands ignores invalid commands and never issues an ERROR message 2 No Strap or ERROR The modem ignores all configuration commands but always issues an OK respon...

Page 49: ...DTE Rate VF Rate Register forces the DTE computer data rate to be equal to the VF telephone line data rate Register has the following values 0 Disable 1 Enable The factory setting is Disable S91 Cellular Enhancements Register determines whether parameters are set to improve performance over a cellular link Should be enabled when the remote modem is using a cellular connection Register has the foll...

Page 50: ...ts 0 through 9 and the letters A through Z upper or lower case Up to 20 VF and DTE passwords can be stored in the password table in the memory of the 3825Plus modem Each password is indexed by a number 1 through 20 The index number is used when displaying or changing a password Originate Security An Originate Access password is entered by a local user to gain access to a local 3825Plus modem This ...

Page 51: ...Only Use commands like the following to configure the modem for DTE Only Security AT SA00000000 Provide Administration Password AT SD1 xyz789 Store DTE password in index location 1 ATS67 0 Set No Callback Security ATS68 1 Set DTE Only Security ATS70 0 Set No Originate Security ATS94 to ATS98 Set to preferred choices AT W Save settings ATZ9 Reset modem The user who dials this modem is prompted for ...

Page 52: ... Password is eight characters long The default password active after a SR command is issued is on the last page of this manual That page may be removed for security purposes The password is 00000000 when the modem is shipped SA pppppppp Change Administration Password Changes the Administration Password The new Administration Password must be eight characters long and is limited to the characters 0...

Page 53: ... a DTE password or a callback Directory or telephone number before disconnecting This S register affects Answer Security only The timer is reset for each phase of the access authorization process 0 10 seconds 1 20 seconds 2 40 seconds 3 60 seconds The factory setting is 20 seconds S95 VF Prompt Type Determines how the modem prompts the remote dialer to enter a VF password For Quiet Answer to work ...

Page 54: ...Number entered by the remote user Enter a value from 0 127 for the command end character The factory setting is 13 ASCII carriage return S98 DTE Password Backspace Character Determines ASCII value used as the backspace Backspace key when entering a password or Callback Directory Number This character moves the cursor to the left and erases the previous character Enter a value from 0 127 The factor...

Page 55: ...remote modems S56 S59 Remote DCP access is accomplished using either the primary or secondary channel of the VF line Using the primary channel gives a much faster response time 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 to data transmission...

Page 56: ... do not appear under the Test branch when using the secondary channel When using the primary channel the Test branch does not appear In the Control branch Make Busy is not available The Security Branch is not available Exit Remote replaces Remote on the local modem s LCD To return to local modem operation select ExitRem Any changes made to configuration options while using the Remote branch are no...

Page 57: ...96 Result Codes Overview A 1 Overview Table A 1 lists all the result codes 3825Plus modems may send to the DTE Result codes can be numeric or verbal terse or extended See the Qn Vn and Xn commands in Chapter 4 for more information A ...

Page 58: ...ONE 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 12 12 CONNECT 9600 Connection at 9600 bps 13 16 CONNECT 12000 Connection at 12 000 bps 14 13 CONNECT 14400 Connection at 14 400 bps 15 14 CONNECT 19200 Connection at 19 200 bps 16 15 CONNECT 7200 Connection at 7200 b...

Page 59: ...ECT 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 39 CONNECT 26400 Connection at 26 400 bps 40 40 CONNECT 28800 Connection at 28 800 bps 41 41 CONNECT 31200 Connec...

Page 60: ...800 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 77 77 FORBIDDEN Forbidden number 78 78 DELAYED Delayed number 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...

Page 61: ...ter see the instructions at the end of this chapter If you would like to copy the software in your modem to a remote 3825Plus modem see the P command in Chapter 4 Table B 1 Modem Health Symptom Action Modem did not pass power up self test Contact the Customer Assistance Center 1 800 237 0016 Power LED does not light Make sure the modem s ON Off switch is in the ON position Make sure the ac power t...

Page 62: ... 4 1 of 3 Modem VF Connection Symptom Action Modem does not receive a dial tone Attach the telephone directly to the wall outlet to verify that a dial tone exists Make sure the VF line is connected to the modem s rear jack labeled LINE Modem does not go off hook and answer an incoming call Verify that the Auto Answer Ring Count configuration option S register 0 is set to a value other than 0 disab...

Page 63: ...carriage return and line feed are used as command terminators If using V 25bis bisync verify that the correct character format uses two synchronous control characters and a start of text control character before the text block and an end of text control character after the text block Modem does not go off hook and begin dialing continued If using V 25bis HDLC verify that the correct character form...

Page 64: ...oopback test Abort the test disconnect the modular VF cord and restart the test Table B 5 Modem DTE Connection Symptom Action Modem does not accept or echo back AT commands Verify that the cable between the Async port of the DTE and the modem is a standard RS 232 cable If the cable is bad replace it Null modem cables also known as crossover cables do not work in this application Reload the Async D...

Page 65: ...d as a result your modem is stuck in fax mode Type ATE1V1 and press Enter The software should respond with an OK Try sending or receiving the fax again Automatic Firmware Download New releases may be available for the 3825Plus modem The latest 3825Plus firmware is available at no charge from the Automatic Firmware Download Center Refer to page A in the front of this document for contact informatio...

Page 66: ... CCITT V 32 9600 4800 bps CCITT V 22bis 2400 bps CCITT V 22 1200 bps CCITT V 21 300 bps Bell 212A 1200 bps Bell 103J 300 bps Leased Line Modulations Proprietary V 34 33 600 31 200 bps ITU T V 34 28 800 26 400 24 000 21 600 19 200 16 800 14 400 12 000 9600 7200 4800 2400 bps V 32terbo 19 200 16 800 bps CCITT V 32bis 14 400 12 000 9600 7200 4800 bps CCITT V 32 9600 4800 bps CCITT V 22bis 2400 bps Fa...

Page 67: ......

Page 68: ...IA Circuit CCITT Signal Source Circuit Function 1 AA 101 Shield 2 TXD BA 103 DTE Transmit Data 3 RXD BB 104 DCE Receive Data 4 RTS CA 105 DTE Request to Send 5 CTS CB 106 DCE Clear to Send 6 DSR CC 107 DCE Data Set Ready 7 SG AB 102 Signal Ground 8 LSD CF 109 DCE Line Signal detect 15 TXC DB 114 DCE Transmit Clock 17 RXC DD 115 DCE Receive Clock 20 DTR CD 108 DTE Data Terminal Ready 22 R1 CE 125 D...

Page 69: ...bstantial 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 2 wire operations 2 4 wire operatio...

Page 70: ...r telephone numbers to memory and list commands that display all telephone numbers stored in directory locations As commands are entered from the DTE the 3825Plus modem issues a response to the DTE which indicates if the call failed or connected or if the command is valid or invalid The following section discusses those V 25bis commands supported by the 3825Plus modem and the responses to those co...

Page 71: ...f the command was accepted by the modem Call Response includes Call Failure Indication CFI and Call Connecting CNX Call Failure Indication CFI The CFI response is issued to the DTE if the modem fails a CRN or CRS command CFI is similar to the AT result codes BUSY NO ANSWER NO CARRIER NO DIALTONE and ERROR The CFI response format is CFIxx Where xx is ET Engaged tone NS Number not stored CB Local DC...

Page 72: ...ing call This command is only valid when the DTE issues a DIC command CIC must be issued within 10 seconds after sending a DIC CIC is similar to the ATA command The CIC command format is CIC If CIC is issued within 10 seconds the modem sends the VAL response to the DTE If CIC is issued after 10 seconds INV is returned Program Normal PRN The Program Normal PRN command allows the DTE to enter and st...

Page 73: ...he DTE INV is similar to the AT result code ERROR The INV response format is INVxx Where xx is CU command unknown MS message syntax error PS parameter syntax error PV parameter value error Table E 1 lists V 25bis commands supported by the 3825Plus modem Table E 1 V 25bis Commands V 25bis Command Description AT Command S Register Equivalent CALL REQUEST COMMANDS CRN Call Request with Number Provide...

Page 74: ...25Plus modem Table E 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 LIST RESPONSE LSN List Stored Number NONE COMMAND RESPONSE VAL Valid Command OK INV Invalid Command ERROR ...

Page 75: ...hat the modem has been approved for use in that country Consult your sales representative Each modem is shipped from the factory with a specific country code The ability to change the country code is not accessible to the user Configuration options for the North America country code are valid in Argentina Bahamas Bermuda Bolivia Brazil Brunei Canada Chile China Colombia Costa Rica Dominican Republ...

Page 76: ...by Country ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ Strap Description ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ DCP Selection ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ AT Command Belgium Denmark Finland France Germany Japan Netherlands North America Norway Singapore Sweden Switzerland Turkey United Kingdom ÁÁÁÁÁÁ ÁÁÁÁÁÁ Auto Answer Ring Number ÁÁÁÁÁ ÁÁÁÁÁ Disable ÁÁÁÁÁ ÁÁÁÁÁ S0 0 ÁÁ ÁÁ V Á...

Page 77: ...ÁÁÁÁÁ ÁÁÁÁÁ 2 sec ÁÁÁÁÁ ÁÁÁÁÁ S10 20 ÁÁ ÁÁ FÁÁÁ ÁÁÁ F ÁÁ ÁÁ FÁÁÁ ÁÁÁ F ÁÁ ÁÁ FÁÁÁ ÁÁÁ F ÁÁ ÁÁ F ÁÁÁ ÁÁÁ F ÁÁ ÁÁ F ÁÁÁ ÁÁÁ F ÁÁ ÁÁ F ÁÁÁ ÁÁÁ F ÁÁ ÁÁ F ÁÁÁ ÁÁÁ F ÁÁÁÁÁÁ ÁÁÁÁÁÁ Disc S10 ÁÁÁÁÁ ÁÁÁÁÁ 5 sec ÁÁÁÁÁ ÁÁÁÁÁ S10 50 ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ 10 sec ÁÁÁÁÁ ÁÁ...

Page 78: ...ÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ I ÁÁ ÁÁ V ÁÁÁ ÁÁÁ I ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ IÁÁÁ ÁÁÁ V ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ 7 dBm ÁÁÁÁÁ ÁÁÁÁÁ I7 ÁÁ ÁÁ FÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ I ÁÁ ÁÁ V ÁÁÁ ÁÁÁ I ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ IÁÁÁ ÁÁÁ V ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ 8 dBm ÁÁÁÁÁ ÁÁÁÁÁ I8 ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ V ÁÁ ÁÁ V ÁÁÁ ÁÁÁ ...

Page 79: ...ÁÁÁ S45 1 ÁÁ ÁÁ ÁÁ V ÁÁÁ ÁÁÁ ÁÁÁ V ÁÁ ÁÁ ÁÁ V ÁÁÁ ÁÁÁ ÁÁÁ V ÁÁ ÁÁ ÁÁ V ÁÁÁ ÁÁÁ ÁÁÁ V ÁÁ ÁÁ ÁÁ V ÁÁÁ ÁÁÁ ÁÁÁ V ÁÁ ÁÁ ÁÁ I ÁÁÁ ÁÁÁ ÁÁÁ I ÁÁ ÁÁ ÁÁ V ÁÁÁ ÁÁÁ ÁÁÁ V ÁÁ ÁÁ ÁÁ F ÁÁÁ ÁÁÁ ÁÁÁ V ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ 2 to 6 dBmÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ S45 2 to S45 6 ÁÁ ÁÁ ÁÁ VÁÁÁ ÁÁÁ ÁÁÁ V ÁÁ ÁÁ ÁÁ V ÁÁÁ ÁÁÁ ÁÁÁ V ÁÁ ÁÁ ÁÁ V ÁÁÁ ÁÁÁ ÁÁÁ V ÁÁ ÁÁ ÁÁ V ÁÁÁ ÁÁÁ ÁÁÁ V ÁÁ ÁÁ ÁÁ IÁÁÁ ÁÁÁ ÁÁÁ I ÁÁ ÁÁ ÁÁ V...

Page 80: ...andard Code for Information Interchange is a 7 bit code which establishes compatibility between data services ASCII is the standard for data transmission over telephone lines The ASCII code consists of 32 control characters nondisplayed and 96 displayed characters asymmetric rate In V 34 the ability of a device to transmit at a different rate than it receives Async Dial A factory preset configurat...

Page 81: ...A storage device used to compensate for differences in the data flow rate when transmitting data from one device to another byte A sequence of successive bits usually eight handled as a unit in data transmission CCITT An advisory committee Consultative Committee on International Telephone and Telegraph established by the United Nations to recommend communications standards and policies Now called ...

Page 82: ......

Page 83: ...em can communicate with a fax machine or with another fax modem fax software A program or system of programs installed on a computer that allow a fax modem to send and receive facsimile images FCC Federal Communications Commission Board of Commissioners that regulates all interstate and foreign electrical communication systems that originate from the United States full duplex Simultaneous two way ...

Page 84: ...ng used Originate mode The modem is in a state where it is ready to transmit a call In a dial network it is the modem that makes the call In a leased line network it is one of two sides of the network that is selected to be the originating modem parity A way of checking data accuracy by counting the number of bits that have a value of one PBX Telephone switching equipment Private Branch Exchange d...

Page 85: ... type of transmission is more efficient than asynchronous transmission tone dialing One of two dialing methods in which telephone numbers are sent as tones across the telephone lines training A process where two modems try to establish a connection over the VF line UL Underwriter s Laboratories Inc UNIX Dial A factory preset configuration area containing the configuration options most often used i...

Page 86: ... V 32ter V 34 A standard for modems operating full duplex with asynchronous or synchronous data over dial networks PSTN or two wire leased lines at 28 800 26 400 24 000 21 600 19 200 16 800 14 400 12 000 9600 7200 4800 or 2400 bps V 42 CCITT standard for error control protocol V 42bis CCITT standard for data compression V 54 CCITT standard for local and remote diagnostic loopback tests VF Voice Fr...

Page 87: ...4 12 W Write to Memory 4 12 X Transmit Clock Source 4 13 Z Store Telephone Number 4 13 A Error Control Fallback Character 4 13 B Modulation Data Rate 4 13 4 15 C MNP5 Data Compression 4 14 SA Enter Administration Password 4 29 SA Change Administration Password 4 29 SB Set VF DTE Password 4 29 SD Set DTE Password 4 29 SP Display Password 4 29 SP Clear Password 4 29 SR Reset Security 4 29 SV Set VF ...

Page 88: ...4 Command mode 4 1 Command Response V 25bis E 4 compression MNP5 4 14 V 42bis 4 7 COMSPHERE 6700 or 6800 Series NMS 1 2 configuration options factory default 2 4 factory defaults AT F 4 9 loading ATZ 4 7 loading when disconnected S88 4 25 saving AT W 4 12 selecting 2 4 viewing AT V 4 12 connect messages A 1 connect problems B 2 B 3 copy firmware to remote 4 8 CTS Control D 4 14 D Data mode 4 1 Dat...

Page 89: ...dem to DTE 4 15 modem to modem 4 14 problems B 2 frame size A 4 14 front panel 1 2 front panel LEDs 1 2 H hang up ATH 4 5 hook flash 4 4 Hook Switch Control ATH 4 5 I Identification ATI 4 5 indicator lights 1 2 initialization strings 2 6 DATAKIT 2 6 synchronous leased line applications 2 6 V 25bis applications 2 6 installation 3825Plus modem 2 2 software 2 3 J JM8 to RJ11 crossover cable 2 3 D 2 L...

Page 90: ...19 S39 Receive Buffer Disconnect Delay 4 19 S41 Dial Line Rate 4 20 S43 V32bis Train 4 20 S44 Leased Line Rate 4 21 S45 Leased Line Transmit Level 4 21 S48 Leased Line Carrier On Level 4 21 S49 Transmit Buffer Disconnect Delay 4 22 S55 Access from Remote 4 22 S56 S59 Remote Access Password 4 22 S62 V 25bis Coding 4 22 S63 V 25bis Idle Character 4 23 S64 V 25bis New Line Character 4 23 S65 Line Cur...

Page 91: ...ing B 1 U UNIX factory default for 4 9 upgrade instructions B 5 V V 21 or V 22 modulation 4 3 V 25bis applications 2 6 V 25bis Coding S62 4 22 V 25bis dialing 4 11 V 25bis dialing commands E 1 V 25bis Idle Character S63 4 23 V 25bis New Line Character 4 23 V 29 Train On Data S92 4 26 V 32bis Automode S78 4 24 V 32bis Autorate Dial Line 4 24 V 32bis Autorate Leased Line 4 25 V 32bis Train S43 4 20 ...

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