Multi-Tech Systems ISIHP-4SD Escape Sequences, Xn XON/XOFF Pass-Through, Jn Data Buffer Control

Modem AT Commands & S-Registers

which uses the Request to Send (RTS) signal on the RS-232/V.24 interface. Hardware flow control cannot be enabled unless an active error correction protocol is selected. This is the factory default setting. (This is the same as &K3.)

\Xn XON/XOFF Pass-Through

n = 0, 1 Default: \X0

When XON/XOFF pacing is active, the local modem has two options regarding the XON and XOFF characters. It can respond to and discard the characters from the computer, or it can respond to the characters and pass them through the data communications link to the remote modem, thereby pacing the remote modem as well.

\X0 causes the modem to respond to and discard the XON and XOFF characters (default)

\X1 causes the modem to respond to and pass on the XON and XOFF characters

\Jn Data Buffer Control

n = 0 Default: \J0

\J0 disables force line rate less than or equal to DTE rate \J1 enables force line rate less than or equal to DTE rate

\Kn Set Break Control

n = 0, 1, 2, 3, 4, 5 Default: \K5

Determines how the modem processes a break signal received from the local DTE during an online connection.

\K5 causes the modem to send the break to the remote modem in sequence with transmitted data, non-destructive, non-expedited.

Escape Sequences

Escape sequences are also known as escape codes. They are used to cause

92 MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD