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

pendyala syam psyam545 at gmail.com
Sun Aug 16 06:28:11 UTC 2015

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.

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