> 2.7.4 | Calling line identification presentation (CLIP)

> This section comprises the subsections Description, Used AT Commands, Flow Chart, Hints and Example. To move to these subsections please use the Navigation Frame or the appropriate buttons on the toolbar.

> 2.7.4.1 | Description

> The supplementary service CLIP permits the called subscriber to display the calling line identity (CLI) of the calling party when a call is received.
> You can enable and disable the presentation of the CLI by using the command AT+CLIP. If CLIP is enabled, every RING will be followed by an unsolicited result code.

> 2.7.4.2 | Used AT commands

> Command | Explanation
> AT+CLIP | Calling line identification presentation (CLIP)
> ATD*#31# | Query status of Calling line identification restriction (CLIR)
> ATD*31# | Deactivate CLIR= enable presentation
> ATD#31# | Activate CLIR= disable presentation
> ATD | Mobile originated call to dial number
> ATA | Answer call
> ATH | Disconnect existing connection

> For further details about the commands see [2].

> 2.7.4.3 | Flow Chart

> Figure 43: CLIP

> 2.7.4.4 | Hints

> GCF-CC note: *# sequences the user enters on the keypad shall be transmitted over the AT interface without any conversion. Also, GCF test cases require that *# sequences can be entered during a call.

> 2.7.4.5 | Example

> Example 1:
> ***************************************
> Comment: Enable calling line identification presentation (CLIP)
> ***************************************
> ***************************************
> Comment: Query CLIP status of the called subscriber
> ***************************************
> Subscr 1 Send: AT+CLIP?
> Subscr 1 Receive: AT+CLIP?
> Subscr 1 Receive:
> Subscr 1 Receive: +CLIP: 1,1
> Subscr 1 Receive:
> Subscr 1 Receive: OK
> ***************************************
> Comment: Set parameter to get the calling line identity
> ***************************************
> Subscr 1 Send: AT+CLIP=1
> Subscr 1 Receive: AT+CLIP=1
> Subscr 1 Receive: OK
> ***************************************
> Comment: Query the CLIR status of the calling subscriber
> ***************************************
> Subscr 2 Send: ATD*#31#;
> Subscr 2 Receive: ATD*#31#;
> Subscr 2 Receive:
> Subscr 2 Receive: +CLIR: 0,4
> Subscr 2 Receive: OK
> ***************************************
> Comment: Enable presentation of own phone number to called party and display CLI
> ***************************************
> Subscr 2 Send: ATD*31#00441522400033;
> Subscr 2 Receive: ATD*31#00441522400033;
> Subscr 1 Receive:
> Subscr 1 Receive: RING
> Subscr 1 Receive:
> Subscr 1 Receive: +CLIP: "+441522400080",145,,,,0
> ***************************************
> Comment: Answer a call
> ***************************************
> Subscr 1 Send: ATA
> Subscr 1 Receive: ATA
> Subscr 1 Receive: OK
> ***************************************
> Comment: Disconnect existing connection
> ***************************************
> Subscr 1 Send: ATH
> Subscr 2 Receive:
> Subscr 2 Receive: OK
> Subscr 1 Receive: ATH
> Subscr 1 Receive: OK
> Subscr 2 Receive:
> Subscr 2 Receive: NO CARRIER
> Example 2:
> ***************************************
> Comment: Disable calling line identification presentation (CLIP)
> ***************************************
> ***************************************
> Comment: Query the CLIP status of the called subscriber
> ***************************************
> Subscr 1 Send: AT+CLIP?
> Subscr 1 Receive: AT+CLIP?
> Subscr 1 Receive:
> Subscr 1 Receive: +CLIP: 1,1
> Subscr 1 Receive:
> Subscr 1 Receive: OK
> ***************************************
> Comment: Set parameter to supress the calling line identity
> ***************************************
> Subscr 1 Send: AT+CLIP=0
> Subscr 1 Receive: AT+CLIP=0
> Subscr 1 Receive: OK
> ***************************************
> Comment: Enable presentation of own phone number to called party
> ***************************************
> Subscr 2 Send: ATD*31#00441522400033;
> Subscr 2 Receive: ATD*31#00441522400033;
> Subscr 1 Receive:
> Subscr 1 Receive: RING
> ***************************************
> Comment: Answer a call
> ***************************************
> Subscr 1 Send: ATA
> Subscr 1 Receive: ATA
> Subscr 1 Receive: OK
> ***************************************
> Comment: Disconnect existing connection
> ***************************************
> Subscr 1 Send: ATH
> Subscr 2 Receive:
> Subscr 2 Receive: OK
> Subscr 1 Receive: ATH
> Subscr 1 Receive: OK
> Subscr 2 Receive:
> Subscr 2 Receive: NO CARRIER