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18. SUPPLEMENTARY SERVICES
325
LZT 123 7263 R1C
18.14 AT+CLIP Calling Line Identification
This command refers to the GSM supplementary service CLIP (Calling
Line Identification Presentation) that enables a called subscriber to get
the calling line identity (CLI) of the calling party when receiving a
mobile terminated call. Set command 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.
When the presentation of the CLI at the TE is enabled (and calling
subscriber allows), +CLIP: <number>,<type> response is returned after
every RING (or +CRING: <type>; refer to subclause “Cellular result
codes +CRC” in GSM 07.07) result code sent from TA to TE. Whether
this response is used when a normal voice call is answered, depends on
the manufacturer.
Read command gives the status of <n> and also triggers an interrogation
of the provision status of the CLIP service according to GSM 02.81
(given in <m>).
Test command returns values supported by the TA as a compound
value.
Unsolicited Result codes:
Description Command Possible Responses
Request calling line
identification
AT+CLIP=<n> • +CME ERROR <err>
•OK
•ERROR
Show the current
setting
AT+CLIP? • + CLIP : <n>,<m>
• +CME ERROR <err>
•OK
•ERROR
Show if the command
is supported
AT+CLIP=? • + CLIP : (list of
supported <n>s)
• +CME ERROR <err>
•OK
•ERROR
<n> Description
0 Disable
1 Enable
<m> Description
0 CLIP not provisioned
1 CLIP provisioned
2 Unknown (e.g. no network)