Compaq 1592DMT Compaq Armada 1500 Family of Personal Computers Maintenance and - Page 173

Table C-1 Continued Command Nn On P Qn Sr=n Description Modulation Handshake. ATNn controls whether or not the local modem performs a negotiated handshake at connection time with the remote modem when the communication speeds of the two modems are different. Parameters: n = 0, 1 n = 0 When originating or answering, handshake only at the communication standard specified by S37 and the ATB command. n = 1 When originating or answering, begin the handshake only at the communication standard specified by S37 and the ATB command. During handshake, fallback to a lower speed may occur (default). Online Command. ATOn forces the modem to the online mode. Parameters: n = 0, 1, 3 n = 0 Go online n = 1 Go online and initiate equalizer retrain before returning to online data mode n = 3 Go online and issue a rate renegotiation before returning to online data mode NOTE: Use this command to return to the online mode after "escaping" to the command mode. Pulse Dial. ATP sets the dialing mode to Pulse. All calls will remain Pulse until Tone dialing is selected (T command). This command can also be used as a dial modifier. Parameters: none NOTE: Pulse dialing is not available in some countries. The P command is ignored in those countries. Result Code Suppression. ATQn enables the modem to send result codes. Parameters: n = 0, 1 n = 0 Enables result codes (default) n = 1 Disables return of result codes (quiet) Write to an S Register. ATSr=n sets register "r" to the value "n." The contents of these registers can be modified with this command. Parameters: none Range: r = 0 - 27, 29, 31 - 33, 35, 37, 89 (register number) n = 0 - 255 (value) NOTE: Writing to reserved registers or read-only registers may cause unpredictable results. See the S Resigister command set registers. Modem Commands C-3