ZyXEL Communications U-1496 series User Manual page 30

+ TRACKS CARRIER AT&C1
(see also S38b3). If S42.7=1, DCD only pulses off for 0.5 sec
when carrier loss happens.
ALWAYS ON AT&C0
RTS OPTIONS
+ IGNORED AT&R1
changes.
CTS TRACKS RTS AT&R0
change. The delay is set in S26.
Note: Effective only on synchronous mode. This setting is ignored
in asynchronous mode. RTS is always used as hardware flow control
in this case.
DSR OPTIONS
+ ALWAYS ON AT&S0
DATA SET READY AT&S1
handshake. If S41.5=1, DSR follows DCD, pulses off for 0.5 sec
for DCD on-off transition. If S44.4=1, DSR follows DTR.
COMMAND ECHO
+ ENABLED ATE1 Modem echoes commands.
DISABLED ATEO Modem does not echo commands.
RESULT CODE
+ ENABLED ATQ0 Modem returns result code.
DISABLED ATQ1 Modem does not return result code.
ATQ2 If S40.1=1, modem does not return result code in
answer mode.
DTE ASYNC SPEED
76800 Select DTE port asynchronous serial speed.
57600 AT command auto speed detection will override
this selection.
38400
19200
16800
14400
12000
9600
7200
4800
3600
2400
1800
DCD ON when carrier is detected.
Modem forces DCD always ON.
Modem assumes RTS always ON, ignores the
Delay before CTS responds to RTS's
Modem forces DSR always ON.
According to CCITT. DSR ON during