Introduction
Overview
Calling Line Identification Presentation (CLIP), also known as Caller ID, is used with Voice over Internet Protocol (VoIP). It sends the calling party's number and name to the called party during ringback. The CLIP selection mode retrieves the calling number and name from SIP headers and displays them on the phone screen. This document describes enhanced CLIP selection modes supported by the IP phones.
Applicable Models
This document applies to the following models: BX3S, BX4, BX5S, BX6, BX7, BX7C, GP210, GP210i, BXU Series.
Target Audience
This document is intended for internal R&D and test engineers who want to understand the enhanced CLIP functionality of the IP phones.
User Guide
CLIP Selection Mode Configuration
The phone supports deriving the calling number and name from the FROM header, P-Asserted-Identity header, and Remote-Party-ID header in the INVITE request. Users can configure the CLIP selection mode via the phone's web user interface. The CLIP selection mode can be configured per line.
CLIP Selection Mode Options Description
The phone implements CLIP selection modes based on the FROM, P-Asserted-Identity, and Remote-Party-ID SIP headers. The enhanced modes are described below:
FROM
The phone displays the calling number and name derived from the FROM header. If the number matches a contact entry, the contact name is displayed.
PAI-FROM
The phone checks and displays the calling number and name from the P-Asserted-Identity header.
If the P-Asserted-Identity header is not present in the INVITE request, the phone falls back to the FROM header.
If the number matches a contact entry, the contact name is displayed.
RPID-FROM
The phone checks and displays the calling number and name from the Remote-Party-ID header.
If the Remote-Party-ID header is not present in the INVITE request, the phone falls back to the FROM header.
If the number matches a contact entry, the contact name is displayed.
PAI-RPID-FROM
The phone checks and displays the calling number and name from the P-Asserted-Identity header.
If the P-Asserted-Identity header is not present, the phone checks and uses the Remote-Party-ID header.
If the Remote-Party-ID header is also not present, the phone falls back to the FROM header.
If the number matches a contact entry, the contact name is displayed.
RPID-PAI-FROM
The phone checks and displays the calling number and name from the Remote-Party-ID header.
If the Remote-Party-ID header is not present, the phone checks and uses the P-Asserted-Identity header.
If the P-Asserted-Identity header is also not present, the phone falls back to the FROM header.
If the number matches a contact entry, the contact name is displayed.
