Cannot do that, Saul. The domain in the request URI is the same, but based on the SIP message type, I have to send to different IP/Port Example: For REGISTER message, mydomain.com should resolve to RegistrationServer:5070 For INVITE message, mydomain.com should resolve to CallHandlerServer:5060 For MESSAGE message, mydomain.com should resolve to MessageServer:5060 I am sure there is a way in pjsip to say: PjsipSendMessage(sock_addr TO, tData); Hope this clarifies the question on what I am looking to do. Thanks Bala -----Original Message----- From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Sa?l Ibarra Sent: Wednesday, August 12, 2009 4:11 PM To: pjsip list Subject: Re: Interesting question: How to make a message be sent to a specific IP/Port, even if the Request URI has an UNRESOLVABLE domain name? If you're using GNU/Linux you can add any domain name to your /etc/hosts file. I don't know if there is somethink like that in windows or Mac though... -- /Sa?l http://www.saghul.net | http://www.sipdoc.net _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip at lists.pjsip.org http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org