[SIPForum-discussion] What are the uses of P-Preferred-Identity??

Sakharam Thorat sakharam.thorat at outlook.com
Wed Aug 19 07:36:29 UTC 2015

Hi ,
It is explained here https://tools.ietf.org/html/rfc5876#page-4.
while reading i found below may be helpful,P-Preferred-Identity header, is the one in which the calling user can indicate one of its publicuser identities. This is the identity that he wants to be used for the call.P-Asserted-Identity header, is the one in which the authorised identity of the user will be transported.So, to explain the use lets consider an example:A UE sends an INVITE to the P-CSCF as follows:INVITE sip:abhishek at network.in SIP/2.0From: "Abhishek" <sip:abhishek at network.in>;tag=12345P-Preferred-Identity: <sip:abhishek at network.in>

Best Regards,Sakharam Thorat.From: psyam545 at gmail.com
Date: Sun, 16 Aug 2015 11:58:11 +0530
To: discussion at sipforum.org
Subject: [SIPForum-discussion] What are the uses of P-Preferred-Identity??

Hi All,
As far I understand, P-Preferred-Identity will be shown as caller display name in callee UI. When SIP already have From header which carriers the caller identity, why is this P-Preferred-Identity header required? Why can't we use From header to show caller display name at callee UI?. Is there any added advantage of this header. Some body please explain. Thanks in advance.

This is the SIP Forum discussion mailing list
TO UNSUBSCRIBE, or edit your delivery options, please visit http://sipforum.org/mailman/listinfo/discussion
Post to the list at discussion at sipforum.org 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://sipforum.org/pipermail/discussion/attachments/20150819/6a73f4ed/attachment.html 

More information about the discussion mailing list