User guide

Raven EDGE/GPRS for Cingular - User Guide, version 2.31 69
AT Commands: Serial
&Sn
&W
\APPP
\ASLIP
\Q
*CTSE=n
Set DSR mode.
n=0 : Always assert DSR.
n=1 : Assert DSR
when in a data mode (UDP, TCP, PPP, or SLIP) (Default).
n=2 : Assert DSR when the
modem has network coverage.
Note: S211 can also be used to request that DSR is always asserted. If S211 is set to
3 and &S is changed to a non-zero value, S211 will be changed to 1.
Writes all changed modem settings. If this command is
not issued, any modified values will
revert back to their previous values at modem reset.
Cannot be configured in Wireless Ace.
Set modem operation to PPP mode.
Cannot be configured in Wireless Ace.
Set modem operation to SLIP mode. DTR must be asserted (&D0 or
S2
11=1).
Cannot be configured in Wireless Ace.
Set or query the serial port flow control setting.
n=0 : No flow control is being used.
n=1 : RTS/CTS hardware flow control
is being used.
n=4: Transparent software flow control. Uses escaped X
ON and XOFF for flow control. XON and
XOFF characters in data stream are escaped with the @ character (0x40). @ in data is sent as @@.
Clear To Send Enable: This feature asserts CTS when there is a network connection.
n=0 : Disabled (Default).
n=1 : Enable assertion of CTS when there is network coverage.
RS232 voltage levels:
Positive = Network coverage.
Negative = No coverage.
Note: Flow control (AT\Q) will override this indication, so if you want to use CTS
to indicate network coverage, flow control has to be off (AT\Q0).