Hello, We have a small 3CX PBX setup. 1 incomming line, 1 IP phone Linksys SPA-942, 2 analog Dect's via linksys gateway, and now 1 new Snom M3. the Snom is working OK, I can call to outside numbers, I can register the phone on the 3CX server, I can dial internal other telephones, but i CANNOT call to the M3. So 100 is de SPA942, 101 is the Analog Dect, 103 is the M3. from outside to 100 is ok, from 100 to 101 is ok, from 101 to 100 is ok, from 103 to 101 is ok, from 103 to 100 is ok from 100 to 103 is NOT ok, from 101 to 103 is NOT ok. I have logfile here: 0101000633 [N](09):Incoming call to UA #0 - given call id #4 and SIP trace here: Received from udp:192.168.0.30:5060 at 01/01/1970 00:06:33 (335 bytes) ACK sip:email@example.com SIP/2.0 Via: SIP/2.0/UDP 192.168.0.30:5060;branch=z9hG4bK-d8754z-d178db753c6d8a08-1---d8754z-;rport Max-Forwards: 70 To: <sip:firstname.lastname@example.org>;tag=du9kwg9w7b6kys From: "101"<sip:email@example.com:5060>;tag=5260bb54 Call-ID: N2RlOTEyNzMyMTgxYmUyOWMzZDlhN2M1NGIxNDQxNDA. CSeq: 1 ACK Content-Length: 0 The phone doesn't ring at all. I tested it as a single SIP phone directly on a analog line, and the M3 was working ok. anybody an idea? With kind regards, Ron Hoskens.