Hi, First, have been lurking for about a week and I feel Freeswitch is a great project, coming from a non-programmer background and heavy familiarity with Asterisk and Callweaver it's a bit of a learning curve to come to grips with the XML but I'm slowly getting there J I'm currently doing some interop testing with Freeswitch and the provider has come back to me stating that they require the Contact header to exhibit: a) e.164 format b) The From, RPID and Contact headers to match Try as I might I am seemingly unable to set the user portion of the Contact header for the outbound leg to the termination provider. The contact is always mod_sofia@<ip:port>. I have found the sip-force-contact setting however it seems to have no effect on the contact header (and I might be using it incorrectly in any case). The ideal behaviour for me is for the contact to take the form of callerid@<ip:port> For example if my sip profile is bound to 192.168.0.1:5060 and my handset callerid is +13035555555 I would like to set the contact to sip:+13035555555@192.168.0.1:5060 Is there an ability within Freeswitch to set the Contact header based on callerid? Craig