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

[Gopalakrishnan N]

For example, if when the call is transferred from one PBX to another PBX,
we can set our own caller-id like caller-id spoofing.

Regards,

On Mon, 17 Aug 2015 at 23:35 pendyala syam <psyam545 at gmail.com> wrote:

> Hi Gopalakrishnan, could please explain me more in detail. You mean to say
> From header can be changed during PBX to PBX transmissio? If so, can you
> please explain me the reasons to change from header?    Thank you
> On Aug 17, 2015 7:17 AM, "Gopalakrishnan N" <saigop at gmail.com> wrote:
>
>> I have seen some kind of senario, where the caller-id is spoofed when the
>> call is getting transferred from one PBX to another PBX, where the
>> caller-id changes and sometimes call won't land properly. In this scenario
>> From header won't change.
>>
>> Hope this helps.
>>
>> Thanks.
>>
>> On Mon, 17 Aug 2015 at 01:26 pendyala syam <psyam545 at gmail.com> wrote:
>>
>>> 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.
>>>
>>> Regards,
>>> Pendyala
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