Specifications

TC35i AT Command Set
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TC35i_ATC_V01.05 Page 116 of 278 04.08.2003
Table 14: Summary of AT commands with different behavior in Multiplex mode
Command Description Chapter
AT\Q<n> 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 AT&W if Multiplex
mode is active.
2.3
AT&V Different configurations on channels 1, 2 and 3 2.37
AT&W Different user profiles can be stored on each channel. 2.38
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=<rate> will not change
the bit rate currently used, but the new bit rate will be stored and be-
comes active, when the module is restarted.
2.47
AT+IPR=0
Multiplex mode cannot be activated while autobauding is enabled.
2.47.1
AT+CALA
On each channel an individual <text> message can be stored. but
only one time setting applies to all channels. This means an alarm
<time> set on one of the channels overwrites the time setting on all
remaining channels.Therefore, the total number of alarm events re-
turned 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.
4.2
AT+CMEE Presentation mode can be separately configured for each channel. 4.25
AT+CNMA If Multiplex mode is activated the +CNMI parameter will be set to zero
on all channels, if one channel fails to acknowledge an incoming
message within the required time.
5.9
AT+CNMI Phase 2+ parameters can only be used on one channel. The parame-
ters for <mt> and <ds> on the other channels have to be set to zero. If
either a SM or a Status Report is not acknowledged, all +CNMI pa-
rameters will be set to zero on all channels.
5.10
AT+CFUN If the ME is in Multiplexer mode, it is not recommended to activate
SLEEP mode with AT+CFUN=<n>. The best approach to properly
control SLEEP mode in this case is to issue the PSC messages de-
scribed in [4], chapter “Power saving control (PSC)”.
4.11
AT+CPMS Parameter <mem3> will be the same on all instances, but the settings
of <mem1> and <mem2> may vary on each instance.
5.11
AT^SSDA If one instance is set to <da>=1 and <mt>=1, then all other instances
must be configured for <mt>=0.
7.45