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Paradyne KeepInTouch 3760 User Manual

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  • Page 1 You have accessed an older version of a Paradyne product document. Paradyne is no longer a subsidiary of AT&T. Any reference to AT&T Paradyne is amended to read Paradyne Corporation.
  • Page 2 3760-A2-GB91-20 P a r a dyn e Issue 3 April 1994 KeepInTouch Card Modem Models 3760, 3762, 3763, and 3764 User’s Guide...
  • Page 3 Important Regulatory Information COPYRIGHT 1994 AT&T Paradyne Corporation* All Rights Reserved Printed in U.S.A. Notice This publication is protected by federal copyright law. No part of this publication may be copied or distributed, transcribed, stored in a retrieval system, or translated into any human or computer language in any form or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the express written permission of AT&T Paradyne...
  • Page 4 Trademarks AT is a trademark of Hayes Microcomputer Products, Inc. AXCELL is a trademark of Spectrum Cellular Corporation. ETC is a trademark of AT&T. EXTRA! is a registered trademark of Attachmate Corporation. Hayes is a registered trademark of Hayes Microcomputer Products, Inc.
  • Page 5 5. A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If products installed in separate buildings are interconnected, the voltage potential may cause a hazardous condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists and, if necessary, implement corrective action prior to interconnecting the products.
  • Page 6 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. If requested, this information must be provided to the telephone company.
  • Page 7 8. This modem cannot be used on public coin service provided by the telephone company. Connection to Party Line Service is subject to state tariffs. (Contact the state public utility commission, public service commission or corporation commission for information.) 9. The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic device to send any message via a telephone fax machine unless such message clearly contains in a margin...
  • Page 8 EMI Warnings WARNING: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 9 Le presént appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la Classe B prescrites dans le règlement sur le brouillage radioélectrique édicté par Le Ministère des Communications du Canada. Canada NOTICE TO THE USERS OF THE CANADIAN PUBLIC SWITCHED TELEPHONE NETWORK The Canadian Department of Communications label identifies certified equipment.
  • Page 10 CAUTION: Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate. The Load Number for this equipment is listed on the modem’s label. The Load Number (LN) assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the device to prevent overloading.
  • Page 11 When entering network addresses into the dialing directory, please ensure that the telephone numbers are correct. Interconnection circuits between this modem and any other equipment should be such that the equipment continues to comply with the requirements of clause 4.2 of EN41003 for TNV (Telephone Network Voltage) circuits and clause 2.3 of EN 60950 for SELV (Safety Extra Low Voltage) circuits after making connection between circuits.
  • Page 12 Power Requirements It is a condition of approval that the power required by the host and the total of all adapter cards installed within the host environment, together with any auxiliary apparatus, does not exceed the power specification as stated in the Technical Reference Material of the host apparatus.

  • Page 13: Table Of Contents

    KeepInTouch Card Modem Package Supplied Equipment Required Equipment Where to Find Additional Information Installation KeepInTouch Card Modem Installation Procedures Model 3760 and Model 3762 Installation Procedures Model 3763 and Model 3764 Installation Procedures Configuring Your PC to Use the KeepInTouch Card Modem...
  • Page 14 Contents An Overview of File Transfers and Fax Operation File Transfers Fax Operation Using Cellular Channels AT Command Set and S-Registers AT Commands and S-Registers Country Specific Information Troubleshooting Technical Specifications Result Codes Cellular Communications Connecting your Modem for Cellular Operation Direct Connection to a Cellular Telephone Connection to a Cellular Telephone through an RJ11 Adapter Box...
  • Page 15 Contents ETC Protocol and Interworking with Non-ETC Modems Placing a Call Through a Public Switched Telephone Network (PSTN) Placing a Call Through a Modem Pool Fax over Cellular Tips for Successful Cellular Operation Overview of Cellular Communication Glossary Index GL-1 IN-1 Issue 3 April 1994...
  • Page 16 Figures Introduction Supplied Equipment Installation Model 3760 and Model 3762 Modem Installation Model 3763 and Model 3764 Modem Installation Issue 3 April 1994...

  • Page 17: A Troubleshooting

    Tables AT Command Set and S-Registers AT Command and S-Register Reference Country Specific AT Command and S-Register Values Other Country-Specific Information Troubleshooting Modem Health Modem — Computer Connection Modem — Telephone Line Connection Online Operation Fax Operation Technical Specifications Technical Specifications Result Codes Result Codes Cellular Communications...

  • Page 18: Introduction

    The KeepInTouch Card family of modems includes Models 3760, 3761, 3762, 3763, and 3764. This manual contains information on Model 3760, Model 3762, Model 3763, and Model 3764.

  • Page 19: G Keepintouch Card Modem Package

    (see Figure 1-1). Supplied Equipment The following hardware and software is included with the modem: One KeepInTouch Card modem One user’s guide (For Model 3760 and Model 3762 only:) A 2-pin modular telephone cord. Issue 3 April 1994...
  • Page 20 (For Model 3763 and Model 3764 only:) A 25-pin modular connector attached to a 2-meter-long telephone cord, terminated by a telephone plug which is specific to the country in which it will be used. The following items are optional and may not be packaged with your modem: One KeepInTouch Card Installation Utilities support software diskette (3.5”) containing both configuration...

  • Page 21: Required Equipment

    Required Equipment The following additional hardware and software is necessary to install and operate the modem. A notebook or laptop personal computer that supports a PCMCIA Release 2.0 socket. A communications software application to allow the PC to control the modem (if not supplied with your modem). This type of software application will allow you to use your modem to transfer files to and from your PC, receive electronic mail (e-mail), dial into bulletin boards,...

  • Page 22: G Where To Find Additional Information

    Where to Find Additional Information There are help text files (also called “readme” files) available which contain information to supplement this user’s guide. The help text files may contain information which is more recent than what is printed in this user’s guide. The files cover a variety of topics, including modem installation, tutorial information, AT command usage, and cellular operation.

  • Page 23: Installation

    Installation KeepInTouch Card Modem Installation Procedures The following section describes how to install Models 3760, 3762, 3763, and 3764 of the KeepInTouch Card modem. Please take a minute to review these procedures before installing your modem. Model 3760 and Model 3762 Installation...
  • Page 24 Figure 2-1. Model 3760 and Model 3762 Modem Installation 1. Locate an unused PCMCIA socket on your PC. Refer to your PC’s user’s guide for more information about the PCMCIA socket. 2. Hold the modem so that the product logo label is facing up, and the 68-pin connector is facing the PCMCIA socket.
  • Page 25 3. Connection to a Telephone Outlet If you intend to use regular telephone lines, use the 7-foot cord that has the 2-pin connector and use this step. If, however, you intend to use a cellular telephone, refer to the Direct Connection to a Cellular Telephone section in Appendix D, Cellular Communications .

  • Page 26: Model 3763 And Model 3764 Installation Procedures

    Model 3763 and Model 3764 Installation Procedures Use Figure 2-2 and the following procedures to install Model 3763 and Model 3764 modems. Figure 2-2. Model 3763 and Model 3764 Modem Installation 1. Locate an unused PCMCIA socket on your PC. Refer to your PC’s user’s guide for more information about the PCMCIA socket 2.

  • Page 27: G Configuring Your Pc To Use The Keepintouch Card Modem

    3. Connection to a Telephone Outlet If you intend to use regular telephone lines, use this step. If, however, you intend to use a cellular telephone, refer to the Direct Connection to a Cellular Telephone section in Appendix D, Cellular Communications, then continue with Step 4.
  • Page 28 (Note, however, that the upgrade feature is not available for Model 3760 and Model 3763.) Hot insertion allows you to insert or remove the...

  • Page 29: G Fax Application Software

    Services). For more information on these programs, refer to the help text files included on the diskette. Fax Application Software Some KeepInTouch Card modems ship with software which will allow you to send and receive facsimiles. Follow the installation and operation instructions which are packaged with the fax software.

  • Page 30: Using Your Modem

    Using Your Modem This chapter highlights some of the basic functions and commands necessary to operate your modem. Whether you consider yourself a novice or an experienced user in data communications, you may want to read through some of the examples to become familiar with your modem’s operation.
  • Page 31 The AT (or at) prefix (which means attention) can be upper- or lowercase, but the modem will not recognize mixed case prefixes (At or aT). The data character format (how your data is structured) for the AT command set must be one of the following. It can be set using your communications software: –...

  • Page 32: G Making A Call With Your Modem

    Making a Call with Your Modem The dial command (D) is used to initiate a call. When the modem receives this command, it goes off-hook (connects the modem to the phone line so that a call can be made), and dials the telephone number entered.

  • Page 33: G Disconnecting A Call

    @ – Quiet answer. Wait for five seconds of silence after dialing the number. If the silence is not detected, the modem sends a NO ANSWER result to the computer. ! – Hook flash. This causes the modem to go on-hook for a specific time period, then return to off-hook.
  • Page 34 The any-key abort is useful if the number dialed does not answer. Otherwise, if you do not press a key, the call will time-out and disconnect based on the settings of other configuration options, such as S-Register 7. The ATH command is another method of disconnecting. Once your call is complete, enter online Command mode and issue an ATH command to make your modem hang up, or go on-hook.

  • Page 35: G Manually Answering A Call

    Manually Answering a Call The best way to answer a call is to set the Auto-Answer Ring Number register (S0) to 1 or more rings. The modem is configured at the factory to automatically answer after a specified number of rings. The number of rings used as the factory setting for S0 varies by country and is listed in Table 4-2 in Chapter 4.

  • Page 36: G Operating Modes (Command And Data)

    If you would like to know more about viewing, saving, and reloading factory settings, refer to the following commands in Chapter 4: &V (Result Codes Format), &W (Write/Save), &F (Select Factory Default), and Z (Reset and Load Active). Operating Modes (Command and Data) Before a modem goes online (establishes a successful connection with a remote modem), it is considered to be in...

  • Page 37: G Changing Modem Modulations And Modem Speed

    NOTE: The modem enters online Command mode and responds with an OK. To return to Data mode from online Command mode, use the O command. Enter the following command: TYPE: ATO PRESS: Enter Changing Modem Modulations and Modem Speed A modem modulation is a set of guidelines that determine how the modems connect and at what speed they communicate.

  • Page 38: G An Overview Of File Transfers And Fax Operation

    If you would like to know more about how the KeepInTouch Card modem uses modem modulations and data rates, refer to the following commands in Chapter 4: B (CCITT/Bell), S41 (Dial-Line Rate), S76 (V.32 bis Autorate for Dial-Line Operation), and S78 (V.32 bis Automode for Dial-Line Operation). An Overview of File Transfers and Fax Operation This section does not describe how to transfer and receive files...

  • Page 39: Fax Operation

    A file transfer protocol sets up the ground rules that your modem and the remote system will use to get files back and forth. Your communications software manual will describe the various protocols it supports. Your communications software will usually walk you through the download/upload process.

  • Page 40: At Command Set And S-Registers

    AT Command Set and S Registers AT Commands and S-Registers This chapter provides a list of all AT commands and S-Registers supported by the KeepInTouch Card modem. This chapter first lists AT commands in alphabetical order followed by S-Registers listed in numerical order. Factory settings are listed in bold. In general, AT commands are responsible for instructing the modem to do a task, while S-Registers are responsible for determining how the AT command will perform that task.
  • Page 41 Table 4-1. AT Command and S-Register Reference (1 of 27) Command Description S-Register Escape sequence The escape sequence allows the modem to exit Data mode and enter online Command mode. Repeat last command Do not precede this command with an AT prefix or conclude it by pressing the Enter key.
  • Page 42 Refer to Appendix D, Cellular Communications , for more information on this command. NOTE: This command is not supported in Model 3760 and Model 3763, as these models do not support cellular operation. C0 Enables automatic cellular setup...
  • Page 43 Table 4-1. AT Command and S-Register Reference (3 of 27) Command Description S-Register Hook This command lets the modem go on-hook to disconnect a call or off-hook to busy out the telephone line. H or H0 Identification This command displays specific information about your modem.
  • Page 44 Table 4-1. AT Command and S-Register Reference (4 of 27) Command Description S-Register Speaker On/Off Control Speaker always Off. Speaker ON until carrier signal becomes active. Speaker always ON. Return Online to Data Mode This command allows you to exit Online Command mode and return to Data mode.
  • Page 45 Table 4-1. AT Command and S-Register Reference (5 of 27) Command Description S-Register Result Codes Format This command controls whether or not result codes appear as words or as numeric codes. Displays as digits (Numbers 1) Displays as text Displays as digits (Numbers 2) Extended Result Codes, Dial Tone Detect, Busy Tone (continued Detect...
  • Page 46 Table 4-1. AT Command and S-Register Reference (6 of 27) Command Description S-Register Extended Result Codes, Dial Tone Detect, Busy Tone Detect (continued from Disables extended result codes 5 –16, dial tone previous detect, and busy tone detect . See above note page) concerning blind dialing.
  • Page 47 Table 4-1. AT Command and S-Register Reference (7 of 27) Command Description S-Register Long Space Disconnect This command determines the modem’s response to a continuous spacing condition sent from the remote modem when it is online. Disable Enable Reset and Load Active This command loads the settings of either the User 0 or User 1 permanent storage area into the Active memory locations.
  • Page 48 Table 4-1. AT Command and S-Register Reference (8 of 27) Command Description S-Register &D n DTR Action This command controls what actions are taken by the modem based upon the Data Terminal Ready signal. &D0 Ignore true status, treat as always ON. &D1 Places modem into Online Command mode (the call is not disconnected) when the DTR signal turns Off.
  • Page 49 PSTN or a cellular telephone. Not supported by Model 3760 and Model 3763, as these models do not support cellular operation. &G n V.22 bis Guard Tone This command determines whether the V.22 bis guard...
  • Page 50 DTR dialing. Both the &M0 and &Q0 commands perform the same function. &M0 or &Q0 &Q4 Enables asynchronous operation with AT command protocol dialing. Enables Hayes Autosync mode. Not available in Model 3760 and Model 3763. Issue 3 April 1994 4-11...
  • Page 51 Table 4-1. AT Command and S-Register Reference (11 of 27) Command Description S-Register &R n RTS Action This command controls how the modem responds to the Ready-to-Send (RTS) signal input from the computer. &R0 Follows standard RS-232 operation &R1 Ignore &R2 Simulated Control Carrier &S n DSR Control...
  • Page 52 Table 4-1. AT Command and S-Register Reference (12 of 27) Command Description S-Register &T n Tests The &T command allows you to perform diagnostic tests on your modem. The modem must be configured for Direct mode (\N1) before a test is started.(Note that commands &T1, &T6, &T7, and &T8 can also be performed in Buffer mode (\N0).) The test invoked by commands &T1–&T8 run until the &T0 command...
  • Page 53 Table 4-1. AT Command and S-Register Reference (13 of 27) Command Description S-Register &V n View Configuration Options and Phone Directory &V0 Displays current configuration options in Active memory. &V1 Displays configuration options stored in memory area specified by &Y command. &V2 Displays configuration options stored in User 0.
  • Page 54 Table 4-1. AT Command and S-Register Reference (14 of 27) Command Description S-Register &Y n Load Configuration Options on Power-Up This command determines which set of configuration options are loaded into Active memory when a modem power-up occurs. &Y0 Loads configuration options from User 0. &Y1 Loads configuration options from User 1.
  • Page 55 Table 4-1. AT Command and S-Register Reference (15 of 27) Command Description S-Register \C n Error Control Negotiate Buffer This command will control whether or not the modem buffers (saves into a temporary waiting area) the data that it received from the remote modem during an interval in which the modem attempts to establish a connection using V.42 or MNP error control.
  • Page 56 Table 4-1. AT Command and S-Register Reference (16 of 27) Command Description S-Register \K n Break Buffer Control, Send Break Control, Break Forces Escape This command controls three different configuration options. Break Buffer Control determines if data stored in the modem’s buffer is saved or discarded when the computer issues a break sequence.
  • Page 57 Table 4-1. AT Command and S-Register Reference (17 of 27) Command Description S-Register \N n Error Control Mode This command determines the type of error control used by the modem. Buffer mode Direct mode MNP or disconnect MNP or buffer LAPM or disconnect LAPM or buffer V.42/MNP or disconnect...
  • Page 58 Table 4-1. AT Command and S-Register Reference (18 of 27) Command Description S-Register \T n No Data Disconnect Timer This command forces the modem to disconnect if no data is transmitted or received within a specified time period. Disable Sets the No Data Disconnect Timer to value n, which varies by country.
  • Page 59 Table 4-1. AT Command and S-Register Reference (19 of 27) Command Description S-Register %C n V.42 bis and MNP 5 Data Compression This command enables or disables the use of V.42 bis and MNP Level 5 data compression. Online changes do not take effect until a disconnect occurs. %C0 Disable %C1 Enable %R n...
  • Page 60 Table 4-1. AT Command and S-Register Reference (20 of 27) Command Description S-Register S0= n Auto-Answer Ring Number This register determines the number of rings the modem will count before automatically answering a call. Acceptable ring counts vary by country and are listed in Table 4-2.
  • Page 61 Table 4-1. AT Command and S-Register Reference (21 of 27) Command Description S-Register S6= n Blind Dial Pause Time This register determines how long (in seconds) the modem waits, after going off-hook, before dialing a telephone number when the Dial Tone Detect configuration option (X command) is disabled.
  • Page 62 Table 4-1. AT Command and S-Register Reference (22 of 27) Command Description S-Register S11= n DTMF Tone Timer (ON) This register controls the length of the DTMF (touch tone) ON time. Acceptable values vary by country and are listed in Table 4-2.
  • Page 63 Table 4-1. AT Command and S-Register Reference (23 of 27) Command Description S-Register S25= n DTR Detection This register determines how much time elapses between the modem detecting the loss of DTR and the modem responding to the loss of DTR. This setting is used to determine the DTR delay required by the &D4 command.
  • Page 64 Table 4-1. AT Command and S-Register Reference (24 of 27) Command Description S-Register S43= n V.32 bis Train This register determines whether minimum or maximum time durations are used during the V.32 bis/V.32 handshaking sequence for dial-line applications. 0 = Long 1 = Short S49= n Buffer Disconnect Delay...
  • Page 65 Table 4-1. AT Command and S-Register Reference (25 of 27) Command Description S-Register S78= n V.32 bis Automode for Dial-Line Operation If enabled, automode permits the modem to automatically connect to a remote modem using any supported modulation scheme. If disabled, the modem only supports the modulation scheme selected by the S41 register (Dial-Line Rate).
  • Page 66 Table 4-1. AT Command and S-Register Reference (26 of 27) Command Description S-Register S85= n Fast Disconnect This command controls when the modem disconnects after receiving a disconnect command from the locally attached computer. If enabled, the modem goes on-hook immediately. If disabled, the modem issues a cleardown sequence and, if so configured, a long space prior to disconnecting.
  • Page 67 1 = Enable S91= n Cellular Enhancements This is part of the ETC protocol. NOTE: This command is not supported in Model 3760 and Model 3763, as these models do not support cellular operation. 0 = Disable 1 = Enable 4-28...

  • Page 68: G Country Specific Information

    Country Specific Information The acceptable values for some AT commands and S-Registers depends on the country in which you are operating your modem. Table 4-2 contains information on the values to be used for those commands and S-Registers when operating your modem in the United States, Canada, and United Kingdom.
  • Page 69 Table 4-3. Other Country-Specific Information ! Hook Flash dial modifier time period Can transmit level be changed? (see &I, &J0) Transmit Levels (Permissive) Is Blind dialing supported? (see X, S6) Is Guard Tone mandatory? (see &G) 4-30 Issue 3 April 1994 United States United and Canada...

  • Page 70: Troubleshooting

    Troubleshooting This appendix points out basic problems that can occur when operating a KeepInTouch Card modem. It begins with simple actions and progresses to more detailed reasons as to why your modem may not operate. Use the hints provided in Tables A-1 through A-5 to troubleshoot problems you may encounter.
  • Page 71 If you suspect that the firmware on your modem has been corrupted, you may want to use the Upgrade program. The Upgrade program will install new firmware into your modem from the Bulletin Board System. NOTE: Model 3760 and Model 3763 modems are not upgradeable. Table A-1. Modem Health...
  • Page 72 Table A-2 isolates problems to the connection between your modem and computer. It focuses on the modem not accepting AT commands from the computer. Table A-2. Modem — Computer Connection Symptom Action Modem does Verify that the Configuration Program has not accept or configured the modem for the correct echo back AT...
  • Page 73 Table A-3 provides solutions to problems that can occur when your modem tries to answer or originate a call. Table A-3. Modem — Telephone Line Connection (1 of 5) Action Symptom CONNECTION PROBLEMS — Dial Environments in Answer mode Modem does Make sure the modem and PCMCIA socket are not go off-hook configured for modem operation.
  • Page 74 Table A-3. Modem — Telephone Line Connection (2 of 5) Action Symptom CONNECTION PROBLEMS — Dial Environments in Answer mode Modem goes Verify that the modem is optioned for Automode off-hook, enable (S78=0). Verify that the originating answers, but modem supports your modem’s modulation does not schemes.
  • Page 75 Table A-3. Modem — Telephone Line Connection (3 of 5) Action Symptom CONNECTION PROBLEMS — Dial Environments in Originate mode Modem does Make sure the modem and PCMCIA socket are not go off-hook configured for modem operation. and begin dialing Make sure the telephone line connector is con- nected to the modem.
  • Page 76 Table A-3. Modem — Telephone Line Connection (4 of 5) Action Symptom CONNECTION PROBLEMS — Dial Environments in Originate mode Modem dials If the modem is operating behind a PBX, but does not determine if a 9 and comma are needed before connect the telephone number.
  • Page 77 Table A-3. Modem — Telephone Line Connection (5 of 5) Action Symptom CONNECTION PROBLEMS — Dial Environments in Originate mode Modem does Make sure the telephone cord is connected to not receive a the telephone line connector. dial tone and sends a NO Attach a telephone directly to the wall outlet to DIALTONE...
  • Page 78 If the modems are having trouble passing data after connecting, Table A-4 lists several recommendations and solutions to this problem. Table A-4. Online Operation Symptom Action Data is Use your communications software to verify that scrambled the character format (data bits, parity, and stop bits) is set to the same value in both modems.
  • Page 79 Table A-5 focuses on problems you may experience during fax operation. Table A-5. Fax Operation Symptom Action Modem cannot Make sure the modem and PCMCIA socket are send or receive configured for modem operation. a fax Disable V.17 fax by using the S79 command. Refer to the Fax Operation section of Chapter 3 or your fax application software user’s guide for more information.

  • Page 80: Technical Specifications

    Technical Specifications Table B-1 lists technical specifications for the KeepInTouch Card modem. Table B-1. Technical Specifications (1 of 3) Specifications APPROVALS Model 3760 FCC Part 15 FCC Part 68 DOC CS-03 Model 3762 FCC Part 15 FCC Part 68 DOC CS-03...
  • Page 81 Table B-1. Technical Specifications (2 of 3) APPROVALS (cont.) Model 3763 Model 3764 COMPATIBILITY ENVIRONMENT Operating Temperature Relative Humidity Shock and Vibration Storage Temperature Issue 3 April 1994 This product is intended for use only outside of North America. For approvals, refer to information printed on the modular telephone connector.
  • Page 82 1200, or 300–0 bps. 57,600, 38,400, 19,200, 14,400, 9600, 7200, 4800, 2400, 1200, 300 bps. CCITT V.42 MNP 4–2 CCITT V.42 bis MNP 5 Enhanced Throughput Cellular (ETC) (not available in Model 3760 and Model 3763) Issue 3 April 1994...

  • Page 83: Result Codes

    Result Codes Result Codes Result codes are informational messages sent from the modem and displayed on your monitor. These messages are the modem’s response to commands you issue to the modem. They can inform you of the status of a call (Ring, No Answer), or whether or not a command is valid (OK, Error), or whether or not the modem has connected using error control (Connect 14400 V42/MNP/Bfr).
  • Page 84 Table C-1. Result Codes (2 of 3) Number 1, Word Number 2 NOTE: The following result codes are enabled by the X1–X7 commands. CONNECT 1200 DIALTONE BUSY NO ANSWER No “quiet” answer @ WRONG CALL 10,10 CONNECT 2400 11,11 CONNECT 4800 12,12 CONNECT...
  • Page 85 Table C-1. Result Codes (3 of 3) Number 1, Word Number 2 NOTE: The following result codes are enabled by the X5 command (REL suffix) or the X6 command (V.42, V.42 bis, MNP 2, MNP3, MNP4, or the MNP 5 suffix). 20,10 CONNECT 2400/REL...

  • Page 86: Cellular Communications

    Cellular Communications Connecting your Modem for Cellular Operation Model 3762 and Model 3764 KeepInTouch Card modems support communication over cellular telephone channels. There are two methods for connecting your modem to a cellular telephone. The first method is known as Direct Connect. This method allows you to connect the modem directly to the cellular telephone by using a special cable, known as a Cellular Direct Connect Cable.

  • Page 87: Direct Connection To A Cellular Telephone

    NOTE: For information on accessing “cellular.txt” and other help text files, refer to the section Where to Find Additional Information in Chapter 1, Introduction. Direct Connection to a Cellular Telephone To connect the modem to a cellular telephone with a Cellular Direct Connect Cable, first install the modem in your PC, as described in Chapter 2, Installation .

  • Page 88: G Configuring Your Modem For Cellular Operation

    Configuring Your Modem for Cellular Operation You must configure your modem for cellular operation. If the modem is on the cellular side of the connection (connected to a cellular telephone), there are two methods for configuring the modem. Choose a method based on the type of connection you have selected.

  • Page 89: F5 Cellular Setup For Rj11 Adapter Connection On The Cellular Side

    Table D-1. Automatic Cellular Setup Configuration Parameters Configuration Option Error Control Mode Maximum Frame Size No Carrier Disconnect V.32 bis Train V.32 bis Autorate V.42 ARQ Window Size Window size of 15 Cellular Enhancements Enable When the modem detects a normal land-line telephone connection, the parameters in Table D-1 automatically switch back to their non-cellular settings.

  • Page 90: F6 Cellular Setup For Connection On The Pstn Side

    Table D-2. &F5 Cellular Setup Configuration Parameters (2 of 2) Configuration Option Cellular Enhancements Enable Transmit Level (in North America only) No Answer Time-out V.32 bis Train NOTE: In North America, some of the hardware components of your cellular telephone setup, such as the RJ11 adapter box, may require you to make adjustments to your modem’s dial transmit level (&I command).

  • Page 91: Non-Etc Modems

    Table D-3. &F6 Cellular Setup Configuration Parameters Configuration Option Error Control Mode Transmit Level (in North America only) No Answer Time-out No Carrier Disconnect V.32 bis Train V.42 ARQ Window Size Window size of 15 Cellular Enhancements Enable ETC Protocol and Interworking with Non-ETC Modems To ensure successful data transfer over a cellular channel, your modem supports the ETC (Enhanced Throughput Cellular)

  • Page 92: Placing A Call Through A Modem Pool

    If it is known that the remote land-line modem is not an ETC modem, but that it does support V.22 bis protocol, then configure the mobile site modem to operate at 1200 bps by using the %B1200 command. If possible, make sure that the remote land-line modem is at least configured for Reliable mode (connect using V.42 error control, MNP 4–2, or disconnect).
  • Page 93 The standard fax initialization string that is used for PSTN fax operation can also be used for cellular fax operation, with one addition: when operating through a Motorola Cellular Connection RJ11 adapter box, adjust the transmit level to –16 dBm (by adding &I16 to the initialization string).
  • Page 94 Z modem protocol is recommended for file transfers. Most software packages today support this protocol. Z-modem is a efficient protocol with low overhead, and it allows a dropped call to resume the file transfer at the point of disconnect. If you are using an RJ11 adapter box, make sure that it has a fresh battery installed.
  • Page 95 available frequency can determine if your data call connects. Hand-offs, the passing of your call from one cell to another, can cause delays which result in lost data or disconnection. Note that a hand-off can occur while you are stationary, especially during peak periods. Multipath, a type of interference that is caused by your signal’s reflection from buildings and passing vehicles, can affect your data transmission.
  • Page 96 Glossary Active A nonvolatile configuration area containing the most recently saved configuration options. Any changes made to configuration options can be saved by issuing an AT&W0 command. analog signal A type of signal used to transmit data over telephone lines. Answer mode The modem is in a state where it is ready to receive an incoming call.
  • Page 97 AT prefix A prefix issued before every AT command (except A/ and +++) which identifies the computer’s data rate, parity, and character length. autobaud Modem automatically determines the asynchronous computer data rate when using AT commands. Bell 103J An AT&T Bell standard for 300 bps data transmission. Bell 212A An AT&T Bell standard for 1200 bps data transmission.
  • Page 98 command line Contains the command(s) instructing the modem to perform a function. Command lines begin with the AT prefix, and are executed when you press the Enter key. Command mode One of two modem operating modes. When in Command mode, the modem accepts commands instead of transmitting or receiving data.
  • Page 99 Data mode One of two operating modes. When in Data mode, the modem considers any input from the computer to be data and transmits it across the telephone line to the remote modem. Data Communications Equipment. A modem. dial command modifiers A modifier used in the dial string that instructs the modem how to process a dialed telephone number.
  • Page 100 EIA-RS232 An Electronic Industries Association’s standard defining the 25-position interface between data terminal equipment and data communications equipment. EIA/TIA 578 An Electronic Industries Association’s standard fax modems. error control A method used by the modem to detect and correct data transmission errors.
  • Page 101 flow control A process in which devices stop and start the flow of data in a network to avoid losing data. handshaking The exchange of predetermined codes and signals (tones) to establish a connection between two modems. idle state A state in which the modem’s configuration options can be modified or commands can be issued to the modem using AT commands.
  • Page 102 Microcom Networking Protocol. Levels 4—2 of this protocol detect and correct data errors caused by poor telephone line conditions. Level 5 includes data compression. modem MOdulator/DEModulator. A device used to convert data from a digital signal to an analog signal so that data can be transmitted over a telephone line.
  • Page 103 parity A way of checking data accuracy by counting the number of bits that have a value of one. Telephone switching equipment (Private Branch Exchange) dedicated to one customer. A PBX connects private telephones to each other and to the public dial network. PCMCIA Personal Computer Memory Card International Association.
  • Page 104 Request-to-Send. A signal from the computer to the modem, sent via Pin 4 of an EIA RS-232 interface, that states the computer has data to send. Receive Data. Pin 3 of an EIA RS-232 interface that is used by the computer to receive data from the modem. Conversely, the modem uses Pin 3 to transmit data to the computer.
  • Page 105 Transmit Data. Pin 2 of an EIA RS-232 interface that is used by the computer to transmit data to the modem. Conversely, the modem uses Pin 2 to receive data from the computer. upload A file transfer in which you send a file to another computer. User 0 A user-defined configuration area containing customized configuration options for a specific application.
  • Page 106 V.23 A standard for modems operating with asynchronous or synchronous data at 1200 or 600 bps over dial or leased telephone lines V.32 A standard for modems operating full-duplex with asynchronous or synchronous data at 9600 or 4800 bps on dial or leased telephone lines.
  • Page 107 Index automoding, 3-8 AutoSync. See Hayes AutoSync AT Commands. description, 4-1 guidelines for use, 3-1 +++ (escape sequence), 3-7, A/ (repeat last command), 4-2 A (answer), 4-2 B (CCITT/Bell Mode), 4-2 C (automatic cellular setup), 4-3, D (dial), 3-3, 4-3 DL (dial last number), 4-3 DS (dial stored number), 4-3 E (command character echo),...
  • Page 108 3-9 Hayes AutoSync, 1-2, 2-7 help text files, 1-5 hot insertion, 2-6 install program, A-1 installation procedures model 3760, 2-1 model 3762, 2-1 model 3763, 2-4 model 3764, 2-4 installation utilities diskette, 1-3, Modem configuration areas Active, 3-6...
  • Page 109 readme files. See help text files result codes, 3-2, 3-7, 4-30, C-1 RJ11 adapter box, D-5 S-Registers, 3-1 description, 4-1 S0 (auto-answer ring number), 3-6, 3-10, 4-22 S2 (AT escape character), 4-22 S3 (carriage return character), 4-22 S4 (line feed character), 4-22 S5 (backspace character), 4-22 S6 (blind dial pause time), 4-23 S7 (no answer time out), 4-23...

This manual is also suitable for:

Keepintouch 3762Keepintouch 3763Keepintouch 3764

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