Siemens TC63 ユーザーズマニュアル

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TC63_ATC_V00.490

Page 102 of 501

5/24/05

Confidential / Draft - Do not copy

sent at the previously detected bit rate or, after ME restart, at 57600 bps.

- It is not recommended to switch to autobauding from a bit rate that cannot be detected by the autobaud

mechanism (e.g. 300 bps). Responses to 

=0 and any commands on the same line might be cor-

rupted.

- When autobauding is switched on: 

+ only data length, parity and baud rate are automatically detected 
+ if using 1 stop bit, 

=1 should not be used, because it uses 2 stop bits 

+ if using 2 stop bits, no combination of 

 should be used, which uses 1 stop bit 

• Autobauding and bit rate after restart

The most recently detected bit rate is stored when the ME is powered down (with 

). Therefore, each

time the module is restarted the correct bit rate must be found as described above. Unless the bit rate is deter-

mined, the following constraints apply: 
- An incoming CSD call or a network initiated GPRS request cannot be accepted. This must be taken into

account when autobauding and autoanswer mode (

≠ 0) are enabled at the same time, escpecially

if SIM PIN 1 authentication is done automatically and the setting 

 

≠ 0 is stored to the user profile with

- Until the bit rate is found, URCs generated after restart will be output at 57600 bps. This applies only to

user defined URCs, such as "+CREG", "CCWA", "^SCKS" etc. The URCs "^SYSSTART", "^SYSSTART

CHARGE-ONLY MODE" and "^SYSSTART AIRPLANE MODE" will not be indicated when autobauding is

enabled.

Note: To avoid any problems caused by undetermined bit rates in the direction from TA to TE we strongly

recommend to configure a fixed bit rate rather than autobauding. 

• Autobauding and multiplex mode

If autobauding is active you cannot switch to multiplex mode (see 

).