How do I create two (2) unique, P-Asserted-Identity headers? As required by RFC 3325 <http://www.ietf.org/rfc/rfc3325.txt> : A P-Asserted-Identity header field value MUST consist of exactly one name-addr or addr-spec. There may be one or two P-Asserted-Identity values. If there is one value, it MUST be a sip, sips, or tel URI. If there are two values, one value MUST be a sip or sips URI and the other MUST be a tel URI. A valid, multiple P-Asserted-Identity headers example, taken from RFC 3325: INVITE sip:+14085551212@proxy.pstn.net SIP/2.0 Via: SIP/2.0/TCP useragent.cisco.com;branch=z9hG4bK-124 Via: SIP/2.0/TCP proxy.cisco.com;branch=z9hG4bK-abc To: <sip:+14085551212@cisco.com> From: "Anonymous" <sip:anonymous@anonymous.invalid>;tag=9802748 Call-ID: 245780247857024504 CSeq: 2 INVITE Max-Forwards: 69 P-Asserted-Identity: "Cullen Jennings" <sip:fluffy@cisco.com> P-Asserted-Identity: tel:+14085264000 Privacy: id When I use the following two (2) statements in a Freeswitch dialplan, the second "set," of course, overwrites the data stored by the first "set." <action application="set" data="sip_h_P-Asserted-ID=tel:+1404XXXXXXX"/> <action application="set" data="sip_h_P-Asserted-ID="George F Phelps" <sip:1404XXXXXXX@YY.YY.YYY.YYY>"/> Thanks, George