I understand that setting "canreinvite = yes" in sip.conf allows clients to send RTP streams directly to each other and this works only if there is no NAT involved. But if I want to use two SIP phones behind firewalls and using NAT to be able to send RTP packets to each other bypassing Asterisk, is there a way to do that? Can this be done if I used IAX instead of SIP? What exactly does the "notransfer" option in iax.conf do? Thanks in advance. Regards, Mitul -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20040824/2ce5aeaa/attachment.htm