Adding more on the same with respect to IMS network

The P-CSCF after validating the calling party, forwards the INVITE
request to the home network. It replaces the P-Preferred-Identity with
a P-Asserted-Identity header field or in other cases (based on 3GPP
standards) the P-CSCF removes the P-Preferred-Identity header field and
inserts a P-Asserted-Identity that contains a value the P-CSCF
considers to be one of the valid identities of the user. If there was
no P-Preferred-Identity header, then the P-CSCF chooses a default
identity and inserts it in a P-Asserted-identity header field. 

In any case the SIP request that the P-CSCF forwards always includes a
P-Asserted-Identity header field that includes an authenticated Public
User Identity value.

Best regards,
Harpreet




--- vimal srivastava <[EMAIL PROTECTED]> wrote:

> Hi,
> is it possible to have multiple P-Asserted-Identity headers in a sip 
> message? ( not one sip and one tel, but multiple sip )
> thx
> v.
> 
> 
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