Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 74 12/24/2010
3.2.30 AT+CR Service Reporting Control
AT+CR Service Reporting Control
Response
+CR: (list of supported <mode>s)
OK
Test Command
AT+CR=?
Parameter
See Write Command
Response
+CR: <mode>
OK
Read Command
AT+CR?
Parameter
See Write Command
Response
TA controls whether or not intermediate result code +CR: <serv> is
returned from the TA to the TE at a call set up.
OK
Parameter
<mode> 0 Disable
1 Enable
Intermediate result code
If enabled, an intermediate result code is transmitted at the point during
connect negotiation at which the TA has determined which 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>
Write Command
AT+CR=<mode>
Parameters
<serv> ASYNC asynchronous transparent
SYNC synchronous transparent
REL ASYNC asynchronous non-transparent
REL SYNC synchronous non-transparent
GPRS for GPRS
Reference
GSM 07.07 [13]
Note
3.2.31 AT+CRC Set Cellular Result Codes for Incoming Call Indication
AT+CRC Set Cellular Result Codes for Incoming Call Indication
Test Command Response