Siemens TC63 Manual Do Utilizador

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TC63_ATC_V00.490

Page 105 of 501

5/24/05

Confidential / Draft - Do not copy

Table 4.2:  Summary of AT commands with Different Behavior in Multiplex Mode 

Command

Description

It is recommended to use hardware flow control (

3). XON/XOFF flow control 

1) is not supported in Multiplex mode.

See note regarding 

n settings stored with 

 if Multiplex mode is active.

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. 

=0

Multiplex mode cannot be activated while autobauding is enabled.

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 

? 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.

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 

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 

. The best approach to properly control SLEEP mode in this 

case is to issue the PSC messages described in 

, Section "Power saving control 

(PSC)".

Parameter 

 will be the same on all instances, but the settings of 

 

and 

 may vary on each instance.

If one instance is set to 

=1 and 

=1, then all other instances must be con-

figured for 

=0.