Page 3 - Table of Contents
i Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12. AT Command Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13. AT Commands . . . . ....
Page 4 - ii
Page 5 - Xn
1-1 1. 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. • The modem...
Page 6 - AT; and ends when you press
1-2 MT5634/MT9234 Modem; AT Command Set You can issue several commands in one line, in what is called a command string . The command string begins with AT and ends when you press [Enter] . Spaces to separate the commands are optional; the command interpreter ignores them. The most familiar command s...
Page 7 - AT Command Summary
2-1 2. AT Command Summary Organization of AT Commands on the following pages: 1st, by the initial command character (&, +, %), 2nd, alphabetized by the second command character (Except for listing of AT). Command Description AT Attention Code A Answer A/ Repeat Last Command B n Communication Sta...
Page 10 - Dial; Dial string modifiers:; Dial Stored Telephone Number
3-2 MT5634/MT9234 Modem; AT Command Set Command: D s Dial Values: s = dial string (phone number and dial modifiers) Default: none Description: Dial telephone number s , where s may up to 40 characters long and include the 0–9, *, #, , B, C, and D characters, and the L, P, T, V, W, S, comma (,), semic...
Page 11 - AT Commands; Hook Control; OK; Monitor Speaker Mode
3-3 AT Commands Command: H n Hook Control Values: n = 0 or 1 Default: 0 Description: H0 Go on-hook (hang up). H1 Go off-hook (make the phone line busy). Command: I n Information Request Values: n = 0–5, 9, 11 Default: None Description: I0 Display default speed and controller firmware version. I1 Calc...
Page 13 - Result Code Options
3-5 AT Commands Command: W n Result Code Options Values: n = 0, 1, or 2 Default: 2 Description: W0 CONNECT result code reports serial port speed, disables protocol result codes. W1 CONNECT result code reports serial port speed, enables protocol result codes. W2 CONNECT result code reports line speed...
Page 14 - ATZ; XON/XOFF Pacing Control
3-6 MT5634/MT9234 Modem; AT Command Set Command: &D n Data Terminal Ready (DTR) Control Values: n = 0, 1, 2, or 3 Default: 2 Description: &D0 Modem ignores true status of DTR signal and responds as if it is always on. &D1 If DTR drops while in online data mode, the modem enters command m...
Page 15 - Leased Line Operation
3-7 AT Commands Command: &L n Leased Line Operation Values: n = 0, 1, or 2 Defaults: 0 Description: &L0 The modem is set for standard dial-up operation. &L1 The modem is set for leased line operation in originate mode. &L2 The modem is set for leased line operation in answer mode. No...
Page 16 - Display Current Settings; Store Dialing Command
3-8 MT5634/MT9234 Modem; AT Command Set Command: &T n Loopback Test (V.54 Test) Commands Values: n = 0, 1, 3, 6 Default: None Description: The modem can perform selected test and diagnostic functions. A test can be run only when the modem is operating in non-error- correction mode (normal or dir...
Page 17 - Select Maximum MNP Block Size; Data mode. Modem receives break from computer:
3-9 AT Commands Command: \A n Select Maximum MNP Block Size Values: n = 0, 1, 2, or 3 Default: 3 Description: \A0 64-character maximum \A1 128-character maximum \A2 192-character maximum \A3 256-character maximum Command: \B n Transmit Break Values: n = 0–9 in 100 ms units Default: 3 Description: In...
Page 19 - Data Calling Tone; ERROR; Data Compression Control
3-11 AT Commands Command: \X n XON/XOFF Pass-Through Values: n = 0 or 1 Default: 0 Description: \X0 Modem responds to and discards XON/XOFF characters. \X1 Modem responds to and passes XON/XOFF characters. Note: This is also controlled via &E6 and &E7 . Command: -C n Data Calling Tone Values...
Page 21 - Asynchronous Word Length
3-13 AT Commands Command: $EB n Asynchronous Word Length Values: n = 0 or 1 Default: 0 Description: $EB0 Enables 10-bit mode. $EB1 Enables 11-bit mode. Command: $MB n Online BPS Speed Values: n = speed in bits per second Default: 28,800 Description: $MB75 Selects CCITT V.23 mode $MB300 Selects 300 b...
Page 23 - Command: #CBFR Callback Failed Attempts Reset
3-15 AT Commands Command: #CBF? Callback Failed Attempts Display Values: N/A Default: N/A Description: Requests the number of failed callback passwords since reset or power-up. This number can be stored to nonvolatile memory using the &W command. Command: #CBFR Callback Failed Attempts Reset Val...
Page 24 - Escape AT Commands; Remote Configuration Escape Sequence
3-16 MT5634/MT9234 Modem; AT Command Set Command: #CBS n Callback Enable/Disable Values: n = 0, 1, 2, or 3 Default: 0 Description: #CBS0 Disables callback security. #CBS1 Enables local and remote callback security. #CBS2 Enables remote callback security only. #CBS3 Disables callback security until l...
Page 31 - Basic Procedure; ATO; Setup
6-1 6. Remote Configuration and Country Code Configuration 6.1. Remote Configuration Remote configuration is a network management tool that allows you to configure modems anywhere in your network from one location. With password-protected remote configuration, you can issue AT commands to a remote mode...
Page 32 - Caution: If you do this remotely, you won’t be able to change it
6-2 MT5634/MT9234 Modem; AT Command Set 6.1.2.1. Changing the Setup Password 1. Open a data communications program such as HyperTerminal.2. In the terminal window, type AT#SMTSMODEM (or AT#Syyyyyy if you have replaced the MTSMODEM password with yyyyyy) and press [Enter] . The modem responds with OK ...
Page 33 - Remote Confi guration and Country Code Confi guration; nn
6-3 Remote Confi guration and Country Code Confi guration 6.2. Country Code Configuration Different countries have different requirements for how modems must function. Therefore, before you use the modem, you must configure it to match the defaults of the country in which you are using it. If you are c...
Page 36 - Sterling • Irvine • California 92618
5 Sterling • Irvine • California 92618 (949) 586-9950 • Toll Free: 1-800-854-7226 Fax: (949) 583-9514 • http://www.wti.com
