AT Commands Set

SIM5215_SIM5216 AT Command Manual
AT+CR?
Write Command
AT+CR=
Execution Command
AT+CR
+CR:
OK
Responses
OK
Responses
Set default value:
OK
Defined values
0 – disables reporting
1 – enables reporting
ASYNC asynchronous transparent
SYNC
synchronous transparent
REL ASYNC asynchronous non-transparent
REL sync synchronous non-transparent
GPRS [] GPRS
The optional proposes a layer 2 protocol to use between the MT and the TE.
Examples
AT+CR?
+CR:0
OK
AT+CR=1
OK
4.16 AT+CEER Extended error report
Description
Execution command causes the TA to return the information text , which should offer the
user of the TA an extended report of the reason for:
1 the failure in the last unsuccessful call setup(originating or answering) or in-call
modification.
2 the last call release.
3 the last unsuccessful GPRS attach or unsuccessful PDP context activation.
4 the last GPRS detach or PDP context deactivation.
SIM PIN References
YES 3GPP TS 27.007
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1/13/2011