Siemens Brodersen MC55 AT - Manual (Page 97)

MC55_ATC_V04.00 Page 97 of 475 3/17/06
Confidential / Released
Table 4.2: Summary of AT commands with Different Behavior in Multiplex Mode
Command Description
AT\Q
It is recommended to use hardware flow control (
AT\Q
3). XON/XOFF flow control
(
AT\Q
1) is not supported in Multiplex mode.
See note regarding
AT\Q
n settings stored with
AT&W
if Multiplex mode is active.
AT&V
Different default configurations on channels 1, 2 and 3.
AT&W
Different user profiles can be stored on each channel.
AT+IPR
Before you start Multiplex mode, it is recommended to set the ME to 57600 bps
(minimum should be 4800 bps). For GPRS we suggest to use 115200 bps or
230400 bps.
In Multiplex mode, the write command
AT+IPR
= will not change the bit rate
currently used, but the new bit rate will be stored and becomes active, when the
module is restarted.
AT+IPR
=0 Multiplex mode cannot be activated while autobauding is enabled.
AT+CALA
On each channel an individual message can be stored. but only one time
setting applies to all channels. This means an alarm set on one of the
channels overwrites the time setting on all remaining channels. Therefore, the total
number of alarm events returned by the read command
AT+CALA
? will always be
=0, no matter whether individual text messages are stored.
When the alarm is timed out and executed the ME sends the URC only on the
channel where the most recent alarm setting was made. The alarm time will be
reset to "00/01/01,00:00:00" on all channels.
AT+CMEE
Presentation mode can be separately configured for each channel.
AT+CNMA
If Multiplex mode is activated the +CNMI parameter will be set to zero on all chan-
nels, if one channel fails to acknowledge an incoming message within the required
time.
AT+CNMI
Phase 2+ parameters can only be used on one channel. The parameter for
and on the other channels have to be set to zero. If either a SM or a Status
Report is not acknowledged, all +CNMI parameter will be set to zero on all chan-
nels.
AT+CFUN
If the ME is in Multiplexer mode, it is not recommended to activate SLEEP mode
with
AT+CFUN
= . The best approach to properly control SLEEP mode in this
case is to issue the PSC messages described in [5] , Section "Power saving control
(PSC)".
AT+CPMS
Parameter will be the same on all instances, but the settings of
and may vary on each instance.
AT^SSDA
If one instance is set to =1 and =1, then all other instances must be con-
figured for =0.