On 05/05/2010 05:04 PM, dotnetdub wrote: The first scenario you have to deal with is one in which the customer may be sending you RPID already, as when they have sendrpid=yes enabled in sip.conf in Asterisk: if(is_present_hf("Remote-Party-ID")) remove_hf("Remote-Party-ID"); From there, you can either use append_hf() to add your own RPID header or append_rpid_hf() functions in the 'auth' module: http://www.kamailio.org/docs/modules/3.0.x/modules_k/auth.html#append-rpid-…. Which one to use is a matter of taste. Accessing from the elements of the From URI and display name is possible using a variety of pseudovariables that expose those message parts: http://www.kamailio.org/dokuwiki/doku.php/pseudovariables:3.0.x For example, $fu is the full From URI, $fU is the user part, $fd is the domain part, and $fn is the display name. You can also use URI transformations for this: http://www.kamailio.org/dokuwiki/doku.php/transformations:3.0.x#uri_transfo… In practical terms, this means you can do something like: append_hf("Remote-Party-ID: <sip:$fU@$fd>;party=calling;id-type=subscriber;privacy=off;screen=yes\r\n"); Note that the form you provided is wrong: <sip:16172345671@domain;party=calling;id-type=subscriber;privacy=off;screen=yes> The parameters are header parameters, not URI parameters. See http://tools.ietf.org/id/draft-ietf-sip-privacy-04.txt for more information. Another, slightly more controversial option involves stateful replacement of the From header value, which proxies aren't really supposed to do, but that's what the statekeeping is for: http://www.kamailio.org/docs/modules/3.0.x/modules_k/uac.html#id2886696 -- Alex Balashov - Principal Evariste Systems LLC 1170 Peachtree Street 12th Floor, Suite 1200 Atlanta, GA 30309 Tel: +1-678-954-0670 Fax: +1-404-961-1892 Web: http://www.evaristesys.com/