I will try to make this as short as possible. I have an Asterisk server at work, which is on a private network behind a snapgear firewall. I have configured port forwarding on the snapgear and I know it works.
I know it works because at home, I can plug up my VoIP phone directly to my cable modem and I can dial out; everything works fine. However, when I plug the phone up to my Netgear WGR614 router, I can get dialtone and it seems to dial numbers but I never hear any ringing on the phone. Also, I can’t dial the number from another phone.
I have my sip.conf setup as:
My extension.conf for this line is setup as:
exten => 0905,1,Answer
exten => 0905,2,Ringing
exten => 0905,3,Wait(2)
exten => 0905,4,Set(CALLERID(name)=0905)
exten => 0905,5,Dial(SIP/home,20)
exten => 0905,6,Queue(test)
exten => 0905,7,Hangup
When the phone is setup behind my Netgear router and I try to dial my number, I see this in Asterisk:
Unable to create channel of type SIP (no route to destination)
However, I do see that my phone is now reachable. I have tried changing the nat=yes to no and I didn’t get dialtone. I added the port=5060 line to see if it would help and it didn’t. I have configured port forwarding on my Netgear, and even set my VoIP phoen as the default DMZ. It still won’t work correctly.