ACK is not received from SIP

[gordontor]

Since this evening, whenever an outbound incoming call is received, after about 30 seconds, the call is disconnected. If the call is from another extension, no disconnection will happen.

04-Jan-2014 21:52:53.187 [CM503008]: Call(C:2): Call is terminated
04-Jan-2014 21:52:53.187 [CM503021]: Call(C:2): ACK is not received from sip:[email protected]:9119

 

[mixig]

Start firewall checker and post the results here, NAT/firewall problem probably..

 

[jpillow]

Maybe if you post the server log or a packet capture that would shine some light on why this is happening, is this a remote extension are they all onsite, is this issues happeneing on both incoming and outoging callsk... There isnt a lot of information to go on here maybe if you were to provide more detail that would be helpful in getting this figured out.

 

[gordontor]

Thanks for reply. I did "Run Firewall Checker" from Settings - Firewall Checker", and it showed everything was successful. Now system is running well. No more disconnections happen.

When I posted this topic, the disconnection only happened to the incoming calls. The outgoing calls were working well. Now, both incoming and outgoing are working.

 

[way]

Do you use a load balancing router? If you use this, make sure to bind port 3478 to the same supply as you use for VoIP.