Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 63 23.06.2010
Correspond to SPCK code
<mode> 0 unlock
1 lock
2 query status
<passwd> string type (Shall be the same as password specified for the
facility from the MT user interface or with command
Change Password +CPWD)
<class> 1 voice (telephony)
2 data refers to all bearer services; with <mode>=2 this
may refer only to some bearer service if TA does not
support values 16, 32, 64 and 128)
4 fax
(facsimile services)
7 all classes
<status> 0 Not active
1 Active
Reference
GSM 07.07 [14]
Note
CME errors if SIM not inserted or PIN is not entered.
3.2.18 AT+CLIP Calling Line Identification Presentation
AT+CLIP Calling Line Identification Presentation
Response
+CLIP: <n>, <m>
OK
If error is related to ME functionality:
+CME ERROR: <err>
Read Command
AT+CLIP?
Parameters
see Write Command
Response
+CLIP: (list of supported <n>s)
OK
Test Command
AT+CLIP=?
Parameters
see Write Command
Write Command
AT+CLIP=<n>
Response
TA enables or disables the presentation of the CLI at the TE. It has no
effect on the execution of the supplementary service CLIP in the network.
OK
If error is related to ME functionality:
+CME ERROR: <err>