Specifications
SIM900 AT Command Manual       
SIM900_AT Command Manual_V1.03  61  12/24/2010 
  "PN"   Network Personalization, Correspond to NCK code 
  "PU"   Network subset Personalization 
 Correspond to NSCK code 
  "PP"   Service Provider Personalization 
   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: (list of supported <n>s) 
OK 
Test Command 
AT+CLIP=? 
Parameter 
See Write Command 
Response 
+CLIP: <n>, <m> 
OK 
If error is related to ME functionality: 
+CME ERROR: <err> 
Read 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 










