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MC55 AT Command Set
4. Serial Interface Control Commands
4.
Serial Interface Control Commands
The AT Commands described in this chapter allow the external application to determine various settings related
to the MC55's serial interface.
4.1
AT\Q Flowcontrol
Syntax
Exec Command
AT\Q [
]
<n>
Response(s)
OK
If RTS/CTS flow control is not supported by interface and
ERROR
PIN
ASC0
ASC1
MUX1
!
%
%
Reference(s)
V.25ter
Parameter Description
(num)(&W)(&V)
<n>
(&F)
[0]
1
2
3
Notes
•
When using XON/XOFF flow control (
mission is paused with XOFF. Before entering the command mode with
be resumed using the XON character.
•
For compatibility reasons, the
take effect. However, be aware that whenever you use the
save the current configuration to the user profile with
restart.
MC55_ATC_V01.05
Confidential / Released
MUX2
MUX3
§
§
§
disable flow control
XON/XOFF software flow control
only CTS by DCE
RTS/CTS hardware flow control
Recommended for the following procedures: incoming or outgoing data calls,
fax calls, MUX mode.
Often, the initialization routine of Fax programs includes enabling RTS/CTS
handshake, eliminating the need to issue
1) in online mode,
AT\Q
command can be used in Multiplex mode, though the settings will not
AT\Q
Page 89 of 469
is 2 or 3:
<n>
AT\Q
should not be used while the data trans-
+++
the paused transmission should
+++
write command in Multiplex mode and then
AT\Q
, the changed
AT&W
AT\Q
s
m
obile
3 once again.
setting will become active after
2/10/04
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