Modem User Manual

Chapter 1 – AT Commands, S-Registers and Result Codes
Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 15
Command: \Kn Break Control
Values: n = 0–5
Default: 5
Description: Controls the modem's response to a break received from: computer, remote
modem, or \B command. Response is different for each of three different states.
Data mode. Modem receives the break from the computer:
\K0 Enter online command mode, no break sent to the remote modem.
\K1 Clear data buffers and send break to the remote modem.
\K2 Same as \K0.
\K3 Send break immediately to the remote modem.
\K4 Same as \K0.
\K5 Send break to the remote modem in sequence with the transmitted data.
Data mode. Modem receives the break from the remote modem:
\K0 Clear data buffers and send break to the computer.
\K1 Same as \K0.
\K2 Send break immediately to the computer.
\K3 Same as \K2.
\K4 Send break to the computer in sequence with the received data.
\K5 Same as \K4.
Online command mode. Modem receives a \Bn command from the computer:
\K0 Clear data buffers and send break to the remote modem.
\K1 Same as \K0.
\K2 Send break immediately to the remote modem.
\K3 Same as \K2.
\K4 Send break to the remote modem in sequence with the transmitted data.
\K5 Same as \K4.
Command: \Nn Error Correction Mode Selection
Values: n = 0–5, or 7
Default: 3
Description: \N0 Non-error correction mode with data buffering (buffer mode; same as &Q6).
\N1 Direct mode.
\N2 MNP reliable mode. If the modem cannot make an MNP connection, it
disconnects.
\N3 V.42/MNP auto-reliable mode. The modem attempts first to connect in V.42
error correction mode, then in MNP mode, and finally in non-error correction
(buffer) mode with continued operation.
\N4 V.42 reliable mode. If the modem cannot make a V.42 connection, it
disconnects.
\N5 V.42, MNP, or non-error correction (same as \ N3).
\N7 V.42, MNP, or non-error correction (same as \ N3).
Command: \Qn Flow Control Selection
Values: n = 0, 1, or 3
Default: 3
Description: \Q0 Disable flow control (same as &K0).
\Q1 XON/XOFF software flow control (same as &K4).
\Q2 CTS-only flow control. Not supported.
\Q3 RTS/CTS hardware flow control (same as &K3).
Command: \Tn Inactivity Timer
Values: n = 0, 1–255
Default: 0
Description: Sets the time (in minutes) after the last character is sent or received that the
modem waits before disconnecting. A value of zero disables the timer. Applies only
in buffer mode.
Note: You can also set the inactivity timer by changing the value of S30.