Good day all I cant get my grandstream bt-100 to register My asterisk is on a public ip and the phone behind a nat firewall I added nat=yes in sip.conf and did this on my grandstream set the GS to "SIP server=asterisk.yourhost.com" and leave "Outbound Proxy" empty * set the GS to SIP port 5060 and RTP port 5004 (and "Use random port=No") * set the GS to "NAT traversal=Yes" with "STUN server=stun.xten.net" * arrange port forwarding on your NAT router for tcp/udp 5062 and udp 5004 to your GS phone's IP address * enter "nat=yes" and "canreinvite=no" in your sip.conf for this GS phone user * in this order: issue a "reload" in the Asterisk console, restart your NAT router and reboot the phone * * Please Help