Multi-Tech Systems MultiModem USB MT5634ZBA-USB - Manual (Page 29)

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Chapter 3 - AT Commands, S-Registers and Result Codes
Command: \An 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: \Bn Transmit Break
Values: n = 0–9 in 100 ms units
Default: 3
Description: In non-error-correction mode only, sends a break signal of the specified length to a remote mo-
dem. Works in conjunction with the \K command.
Command: \Gn Modem Port Flow Control
Values: n = 0
Default: 0
Description: \G0 Returns an OK for backward compatibility with some software.
\G1 Not supported—responds ERROR.
Command: \Jn Data Buffer Control
Values: n = 0
Default: 0
Description: \J0 Enable data buffer—serial port speed is independent of connect speed.
\J1 Disable data buffer—serial port speed is forced to the line speed.
Command: \Kn Break Control
Values: n = 0–5
Default: 5
Description: Controls the response of the modem to a break received from the computer, the remote mo-
dem, or the \B command. The response is different for each of three different states.
Data mode. The 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. The 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. The 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.