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TC63_ATC_V00.490

Page 100 of 501

5/24/05

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The command 

 can be used to set or query the TE-TA interface bit rate. 

The test command returns the values of the supported automatically detectable bit rates and the values of the

supported fixed bit rates. 
The read command returns the current bit rate of the interface. 
The write command specifies the bit rate to be used for the interface. When you set a fixed-rate, make sure that

both TE (DTE) and TA (DCE) are configured to the same rate. When you select autobauding, the TA will auto-

matically recognize the bit rate currently used by the TE. 

The setting is stored in the non-volatile memory and will be used whenever the engine is powered up again. How-

ever, in case of autobaud mode (

=0) the detected TA bit rate will not be saved and, therefore, needs to

be resynchronized after restarting the GSM engine (see Section 

). 

bit rate per second (bps)
0

(D)

Activates autobauding. Not supported on ASC1. See Section 

 for further details. 

300
600
1200
2400
4800
9600

Test Command

AT+IPR=?

Response(s)

+IPR: 

(list of supported auto-detectable 

s) , (list of supported fixed-only 

OK

Read Command

AT+IPR?

Response(s)

+IPR: 

OK

Write Command

Response(s)

OK

ERROR

+CME ERROR

Reference(s)

PIN

ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge

4

Last

V.250

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<rate>

(num)(&V)