Solvline MultiModem - Manual (Page 31)

Using AT Commands
31
&Q6 = Normal Mode Asynchronous Operation
The DTE speed is different from the telephone line speed in this mode.
- AT&Rn : Serial RTS/CTS Option
Controls the CTS signal in the synchronous mode. The CTS signal is always on in
the asynchronous mode.
. Parameter : n = 0, 1
. Default : 0
&R0 : Changes the CTS when the RTS is changed to the on-state from the off-
state.
&R1 : Ignores the RTS.
- AT&Sn : DSR Option
Controls the DSR signal.
. Parameter : n = 0, 1
. Default : 0
AT&S0 : Always operates while the modem is running.
AT&S1 : Operates only when the DSR is online. If the carrier is lost, the DSR is
turned off.
- AT&Tn : TEST Command (Test And Diagnostic)
Selects the test command, and the test command is selected at more than
(AT&Q0) 1200 BPS speed only in a direct mode of the asynchronous mode.
. Parameter : n = 0, 1, 3~8
. Default : 0
T0 : Suspends the on-going test. Before carrying out this command, the mode should be
converted into the command mode. If the ATO command is inputted in the command mode, the
local modem or remote modem returns to the normal data transceive mode again while
performing remote digital loopback cast.
T1 : Starts Analog Loopback. This test checks the state between the local DTE and the modem.
Data received from the DTE FH is looped back by the modem to return to the DTE again.
T3 : By starting digital loopback from the local modem to the remote location, data received from
the remote modem returns to the remote location without transmitting the data to the local
modem.
T4 : Enables the modem to respond to the request of the remote modem in a remote loopback