Multi-Tech Systems ISIHP-4S, ISIHP-4U Sn DSR Control Values n = 0, 1, or 2 Default &S1 DSR normal

Terminal Adapter AT Commands & S-Registers

Allows you to control the state of the CTS (Clear to Send) signal. Normally the CTS signal follows the state of the RTS signal when TA is online.

&R0 CTS acts normally; that is, it follows RTS.

&R1 CTS is forced high, but still provides online flow control.

&R2 CTS is forced high, but it drops on disconnect for the period of time set by S10. CTS still provides flow control when the TA is online.

&Sn DSR Control Values: n = 0, 1, or 2 Default: &S1 (DSR normal)

Controls the state of the DSR (Data Set Ready) signal on the RS232E/V.24 interface. A high DSR signal indicates to the computer that the TA is ready to transmit data.

&S0 DSR is always high.

&S1 DSR acts normally; that is, it follows the state of the CD signal, which goes high when the ISIHP-2S/2U detects a carrier signal, and goes low when the carrier signal is lost.

&S2 DSR is always high, except on disconnect, when it drops for the period of time set by S10 and then goes high again.

&Vn View Port Configuration Parameters

Values: n = 0, 1, 2

Default: n/a

Allows you to view the port configuration parameters for ports 0 and 1. This listing is the equivalent of both L5 and L6 combined.

&V0 Displays port 0 configuration parameters. &V1 Displays port 1 configuration parameters.

&V2 Displays both port 0 and port 1 configuration parameters.

MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD 121