Westermo TD-22 - Manual (Page 25)

26 6177-2203
&Rn – RTS/CTS Option
This selects how the modem controls CTS. CTS operation is modified if hardware flow control is
selected (see &K command). The parameter value, if valid, is written to S21 bit 2.
&R0 In Synchronous mode the CTS signals follows the status of RTS. The delay between
RTS and CTS is set in register S26. In asynchronous mode the CTS acts according to
V.25 bis handshake.
&R1 In synchronous mode CTS is always high. In asynchronous mode CTS will only drop if
required by flow control. (Default.)
*R – Request Remote Configuration Mode
This command from the DTE requests the local modem attempt to place the remote modem in
remote configuration mode. The command will only be accepted if the local modem is in on-line
command state during an MNP error corrected link. Enter the password (from 6 to 12 characters in
length) after the REMOTE PASSWORD prompt is displayed by the local DTE. The entered
password is inserted in a remote configuration request (a special MNP frame) and is sent to the
remote modem.
Following a successful request, indicated by the display of the !AT prompt by the local DTE, the
local DTE may send commands to the remote modem. These commands, a subset of the normal
commands available, should be entered without the ”AT” header. Some commands are prohibited and
others may produce unpredictable results. To exit the remote configuration mode, enter the *E
command or the escape sequence defined by register S202. The default password is QWERTY.
Please also refer to AT*C, AT*E, AT/N and S202.
Sn – Read/Write S-Register
The modem selects an S-Register, performs an S-Register read or write function, or reports the value
of an S-Register.
n Establishes S-Register n as the last register accessed.
n=v Sets S-Register n to the value v.
n? Reports the value of S-Register n.
The parameter n can be omitted, in which case the last S-Register accessed will be assumed.
The S can be omitted for AT= and AT?, in which case the last S-Register accessed will be assumed.
For example:
ATS7 establishes S7 as the last accessed register.
AT=40 sets the contents of the last register accessed to 40.
AT? returns the content of the default register.
ATS=20 sets the contents of the last register accessed to 20.
ATS6=30 sets the content of register S6 to 30.
ATS2? returns the content of register S2
Please also refer to the S-register section later in this manual.