Compaq 1592DMT Compaq Armada 1500 Family of Personal Computers Maintenance and - Page 175
Table C-2, AT Commands, Command, Description
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Command &Cn &Dn &F &Gn &Kn &Mn &Qn &Sn Table C-2 AT Commands Description Data Carrier Detect Options. AT&Cn controls the DCD options. Parameters: n = 0, 1 n = 0 DCD is always on; the state of the data carrier from the remote modem is ignored n = 1 DCD is on when a data carrier is detected; DCD is off when data carrier is not detected (default) Data Terminal Ready Option. AT&Dn controls the DTR (Data Terminal Ready) options. Parameters: n = 0 - 3 n = 0 The modem ignores DTR (default) n = 1 The modem assumes the command mode when an on-to-off transition is detected on DTR n = 2 The modem hangs up, assumes the command mode, and disables auto answer upon detecting an on-to-off transition on DTR n = 3 The modem resets upon detecting an on-to-off transition on DTR Load Factory Defaults. AT&F resets the S registers and commands to the factory default values. Parameter: n = 0 n = 0 Recall factory setting as active configuration Guard Tone Option. AT&Gn determines guard tone selection. Parameters: n = 0 - 2 n = 0 No guard tone (default) n = 1 550 Hz guard tone n = 2 1800-Hz guard tone Local Flow Control Selection. AT&Kn determines guard tone selection. Parameters: n = 0, 3, 4 n = 0 Disable flow control n = 3 Enable RTS/CTS flow control (default) n = 4 Enable XON/XOFF flow control Asynchronous Communications Mode. Parameter: n = 0 n = 0 Asynchronous mode (default) Asynchronous Communications Mode. Parameters: n= 0, 5, 6 n = 0 Asynchronous mode n = 5 Error control mode (default) n = 6 Asynchronous mode Data Set Ready Option. AT&Sn selects the Data Set Ready (DSR) action. Parameters: n = 0, 1 n = 0 DSR always on (default) n = 1 DSR turns on when establishing a connection and off when the connection ends Modem Commands C-5