How can I implement RFC 3325 in Kamailio 1.4? ("Include P-Asserted-Identity").

> - Before forwarding the INVITE to the PSTN gateway, the proxy adds > a > P-Asserted-Identity header containing the asserted identity, that > could be a > PSTN number as callerID or any other username, examples: > - P-Asserted-Identity: <sip:+12345678@domain.org> > - P-Asserted-Identity: <tel:+12345678> > - P-Asserted-Identity: <sip:bob.home@domain.org> > - When any other node in the network that trusts this proxy > receives this INVITE from it, it trusts the PAI header and uses it as a > callerid.