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Table 4.2:
Summary of AT commands with Different Behavior in Multiplex Mode
Command
AT\Q
AT&V
AT&W
AT+IPR
AT+IPR=0
AT+CALA
AT+CMEE
AT+CNMA
AT+CNMI
AT+CFUN
AT+CPMS
AT^SSDA
MC55_ATC_V04.00
Confidential / Released
Description
It is recommended to use hardware flow control (AT\Q3). XON/XOFF flow control
(AT\Q1) is not supported in Multiplex mode.
See note regarding AT\Qn settings stored with
Different default configurations on channels 1, 2 and 3.
Different user profiles can be stored on each channel.
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
currently used, but the new bit rate will be stored and becomes active, when the
module is restarted.
Multiplex mode cannot be activated while autobauding is enabled.
On each channel an individual
setting applies to all channels. This means an alarm
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
<n>=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.
Presentation mode can be separately configured for each channel.
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.
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
<ds>
Report is not acknowledged, all +CNMI parameter will be set to zero on all chan-
nels.
If the ME is in Multiplexer mode, it is not recommended to activate SLEEP mode
with AT+CFUN=<fun>. 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)".
Parameter
will be the same on all instances, but the settings of
<mem3>
and
may vary on each instance.
<mem2>
If one instance is set to <da>=1 and <mt>=1, then all other instances must be con-
figured for <mt>=0.
Page 97 of 475
if Multiplex mode is active.
AT&W
AT+IPR=<rate>
message can be stored. but only one time
<text>
<time>
will not change the bit rate
set on one of the
<mt>
<mem1>
3/17/06
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