User guide

101
Chapter 5 - AT Commands
&Rn CTS Control
Values: n = 0, 1, or 2
Default: &R1 (CTS forced high)
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 ISIHx 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.
DSn Dialing a Stored Telephone Number
Values: n = 0–9
Default: n/a
To dial a stored telephone number, type ATDSn in terminal mode, where n is the location of
the number you want to dial. For example, typing ATDS6 <cr> dials a telephone stored in
memory register 6 location.