Siemens M20 Terminal Technical Description page 83

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AT+CR Service reporting control
Test command Response
AT+CR=? +CR: list of supported <mode>s OK
Parameter
see set command
Read command Response
AT+CR? +CR: <mode> OK
Parameter
see set command
Set command Response
AT+CR=<mode> TA controls whether or not intermediate result code +CR: <serv> is returned from the TA to the
TE at call setup.
OK
Parameter
<mode>
Intermediate result code
When enabled, an intermediate result code is transmitted at the point during connect negotiation
when the TA has determined the speed and quality of service will be used, before any error control
or data compression reports are transmitted, and before any final result code (e.g. CONNECT) is
transmitted.
+CR:<serv>
Parameter
<serv>
Reference Note
GSM 07.07 The PLMN influences the second air interface (to the terminator), therefore another mode may be
established from the network
Version 8 dated 15.03.00
0 disable
1 enable
ASYNC asynchronous transparent
SYNC synchronous transparent
REL ASYNC asynchronous non-transparent
REL SYNC synchronous non-transparent
AT command interface
A
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