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AT Commands S-Registers Result Codes for the 5634 Modem Series MT5634IND MT5634ZBA Series MT5634ZBA-USB MT5634ZBA-DID MT5634ZLX Series MT5634ZPX-ISA MT5634ZPX-PCI Series ISI5634PCI Series A Reference Guide...
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2205 Woodale Drive Mounds View, Minnesota 55112 Phone: 763-785-3500 or 800-328-9717 Fax: 763-785-9874 Technical Support Country By Email By Phone France: support@multitech.fr (33) 1-64 61 09 81 India: support@multitechindia.com 91 (124) 6340778 U.K.: support@multitech.co.uk (44) 118 959 7774 U.S. and Canada: suppport@multitech.com...
Contents Contents Chapter 1 - AT Commands............................5 Introduction ................................5 List of General Commands .............................6 List of V.92 Commands ............................7 List of Caller ID Commands ............................7 List of Callback Commands ............................7 List of Escape Commands ............................8 List of DID Commands.............................8 AT Commands Detail ...............................9 Command: AT Attention Code ..........................9 Command:...
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Command: %Cn Data Compression Control ....................15 Command: %DCn AT Command Control .......................15 Command: %DTn Set the Command Mode Time...................16 Command: %En Fallback and Fall Forward Control ..................16 Command: %Hn Direct Connect Enable......................16 Command: %Rn Cisco Configuration ......................16 Command: %Sn Command Speed Response....................16 Command: $Dn DTR Dialing ..........................16 Command:...
Chapter 1 – AT Commands Chapter 1 - AT Commands Introduction The AT commands are used to control the operation of your modem. They are called AT commands because the characters AT must precede each command to get the ATtention of the modem. AT commands can be issued only when the modem is in command mode or online command mode.
Chapter 1 – AT Commands List of General Commands Command Description Attention Code Answer Repeat Last Command Communication Standard Setting – Bell or CCITT Dial Enable Dialing Message DS=n Dial Stored Telephone Number Echo Command Echo Online Data Characters Disconnect (Hang Up) Information Request Not Applicable Monitor Speaker Mode...
Chapter 1 – AT Commands List of Escape Commands Command Description +++AT Escape Sequence %%%ATMTSMODEM Remote Configuration Escape Sequence List of DID Commands Command Description Digit Format Format for Reporting Incoming DID Number Start Protocol Wait for Digit Time-Out Time Busy Out After Call Completion Number of DID Digits Busy Out After Call Completion...
Chapter 1 – AT Commands AT Commands Detail Command: Attention Code Values: Description: The attention code precedes all command lines except A/ and escape sequences. Command: Answer Values: Description: Answer an incoming call before the final ring. Command: Repeat Last Command Values: Description: Repeat the last command string.
Chapter 1 – AT Commands Ignored Characters Ignored: may be used to format the dial string. Ignored: may be used to format the dial string. <space> Ignored: may be used to format the dial string. <i> Invalid character: will be ignored. Command: Enable Dialing Message Values:...
Chapter 1 – AT Commands Command: Modulation Handshake Values: n = 0 or 1 Default: Description: Modem performs handshake only at communication standard specified by S37 and the B command. Modem begins handshake at communication standard specified by S37 and the B command.
Chapter 1 – AT Commands Command: Result Code Selection Values: n = 0–7 Default: Description: Basic result codes (e.g., CONNECT); does not look for dial tone or busy signal. Extended result codes (e.g., CONNECT 46000 V42bis); does not look for dial tone or busy signal.
Chapter 1 – AT Commands Command: &Zn=x Storing a Dialing Command Values: n = 0–3. Callback security disabled. 0, 1 used by MultiModemZPX/ZLI. 0, 1, 2 used by MultiModemZBA. 0–29. Callback security enabled. x = Stored telephone number Default: None Description: Stores dialing command x in memory.
Chapter 1 – AT Commands Command: Flow Control Selection Values: n = 0, 1, or 3 Default: Description: Disables flow control (same as &K0). XON/XOFF software flow control (same as &K4). CTS-only flow control. Not supported. RTS/CTS hardware flow control (same as &K3). Command: Inactivity Timer Values:...
Chapter 1 – AT Commands Command: %DTn Set Command Mode Time Values: 0-255 in 1 second increments Default: Description: Sets the length of time that the command mode will be disabled when set for %DC1 (the modem ignores AT commands). Command: Fallback and Fall Forward Control Values:...
Chapter 1 – AT Commands Command: $MBn Modem Baud Rate Values: 75, 300, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 33600 Default: 33600 Description: Presets the transmission baud rate for originate operations (i.e., the speed of the modem’s transmissions over the telephone lines when originating a call). With speed conversion, transmission speed can be a different baud rate than the serial port speed.
Chapter 1 – AT Commands V.92 Commands Command: +PCW=n Call Waiting Enable Values: n = 0, 1, or 2 Default: Description: Controls the action to be taken upon detection of a call waiting tone in V.92 mode. Values specified by this command are not modified when an AT&F command is issued. +PCW=0 Toggles V.24 Circuit 125 and collects Caller ID if enabled by +VCID +PCW=1 Hangs up +PCW=2 Ignores V.92 call waiting...
Chapter 1 – AT Commands Command: +PMHT=n Modem on Hold Timer Values: n = 0–13 Default: Description: Determines if the modem will accept a V.92 Modem on Hold request; sets the MoH timeout. +PMHT=0 Deny MOH request +PMHT=1 Grant MOH request with 10 second timeout +PMHT=2 Grant MOH request with 20 second timeout +PMHT=3...
Chapter 1 – AT Commands Command: +DS44=n V.44 Data Compression Values: See description Default: See description Description: Controls the V.44 data compression function. The command syntax is +DS44=[direction][,[0][,[0] [,[max_codewords_tx][,[max_codewords_rx][,[max_string_tx] [,[max_string_rx][,[max_history_tx][,[max_history_rx]]]]]]]]]<CR> Subparameters that are not entered retain their current value. Commas separate optional subparameters, and must be inserted to skip a subparameter.
Chapter 1 – AT Commands Command: +MS= Modulation Selection Values: See description. Defaults: See description. Description: This extended-format command selects modulation, enables or disables automode, and specifies the highest downstream and upstream connection rates using one to four subparameters. The command syntax is: +MS= [mod][,[automode][,[0][,[max_rate][,[0][,[max_rx_rate]]]]]]<CR>...
Chapter 1 – AT Commands Caller ID Commands Command: +VCID=n Caller ID Selection Values: n = 0, 1, or 2 Default: Description: Enables Caller ID detection and configures the reporting and presentation of the Caller ID data that is detected after the first ring. The reported data includes the date and time of the call, the caller's name and number, and a message.
Chapter 1 – AT Commands Callback Security Commands Command: #CBAn Callback Attempts Values: n = 1–255 Default: Description: Sets the number of callback attempts that are allowed after passwords have been exchanged between modems.· Command: #CBDn Callback Delay Values: n = 0–255 Default: Description: Sets the length of time (in seconds) that the modem waits before calling back the remote...
Chapter 1 – AT Commands Command: #CBSn Callback Enable/Disable Values: n = 0, 1, 2, or 3 Default: Description: #CBS0 Disables callback security. #CBS1 Enables local and remote callback security. #CBS2 Enables remote callback security only. #CBS3 Disables callback security until local hangup or reset. #CBS4 Enables a callback security modem to originate a call without a connection password prompt.
Chapter 1 – AT Commands DID Commands The DID modem uses *D commands to configure the modem’s DID features. The modem must be configured for the proper protocol, digit format, digit time out, digit report format, and number of digits. This configuration is determined by the company from which the DID line is ordered and the setup used by the phone company.
Chapter 1 – AT Commands Command: Busy-Out Timer at End of Call Values: 0-255 Default: Description: This command defines the amount of time to busy out the modem upon disconnecting from a DID call. The delay is ended when the timer runs out or a *DS command is received. *DW0 This command disables the delay.
Chapter 2 – S-Registers Chapter 2 - S-Registers Certain modem values, or parameters, are stored in memory locations called S-Registers. Use the S command to read or to alter the contents of S-Registers (see previous section). Register Unit Range Default Description 1 ring 0–255...
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Chapter 2 – S-Registers Register Unit Range Default Description decimal 0–19 Sets the maximum V.34 “upstream” speed at which the modem attempts to connect. Value Speed maximum modem speed reserved 1200/75 bps 300 bps reserved 1200 bps 2400 bps 4800 bps 7200 bps 9600 bps 12000 bps...
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Chapter 2 – S-Registers Register Unit Range Default Description decimal 7 or 128 Enables (7) or disables (128) LAPM negotiation. The following table lists the S36 and S48 configuration settings for certain types of connections. S48=7 S48=128 S36=0, 2 LAPM or Hangup Do not use S36=1, 3 LAPM or Async...
Chapter 3 – Result Codes Chapter 3 - Result Codes In command mode your modem can send responses called result codes to your computer. Result codes are used by communications programs and are displayed on your monitor. Terse Verbose Description Command executed CONNECT Modem connected to line...
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