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Download User`s Manual Version 5.2
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SIP User's Manual 7. Telephony Capabilities 7.14.7.3 Caller ID on the IP Side 7.14.7.3.1 Overview Caller ID is provided by the From header containing the caller's name and "number", for example: From: “David” <SIP:[email protected]>;tag=35dfsgasd45dg If Caller ID is restricted (received from Tel or configured in the gateway), the From header is set to: From: “anonymous” <[email protected]>; tag=35dfsgasd45dg The P-asserted (or P-preferred) headers are used to present the originating party’s caller ID even when the caller ID is restricted. These headers are used together with the Privacy header. If Caller ID is restricted: • The From header is set to “anonymous” <[email protected]> • The ‘Privacy: id’ header is included • The P-Asserted-Identity (or P-preferred-Identity) header shows the caller ID If Caller ID is allowed: • The From header shows the caller ID • The ‘Privacy: none’ header is included • The P-Asserted-Identity (or P-preferred-Identity) header shows the caller ID In addition, the caller ID (and presentation) can be displayed in the Calling Remote-PartyID header. Version 5.2 421 September 2007
