Call goes quiet

[womble1]

Hi ned some suggestions for troubleshooting...
Every so often when on a call (say once in 5 - 10 minutes ) the line goes quiet for about 5 seconds.
Then it comes back again. Call quality is almost perfect the rest of the time...
Also I have been cut off some times and can see in FreePBX status that all sip trunks are dropped....
Obviously I have got an issue.. but where to start looking....

 

[dswartz]

sounds like some kind of firewall (NAT?) issue maybe.

 

[womble1]

Maybe,
How would I check… ?
New router ?

 

[briankelly63]

There are a few things to consider... the router is certainly one of them. Are you relying on the SIP intelligence of the router to handle the redirection of certain ports like 5060 and 10000-20000 for rtp? Most routers also have different choices for NAT avail. If you are relying on the router than you might try adding specific entries in the routers port forwarding or servers section to forward those ports all the time to your Asterisk server.

There are also settings within sip.conf and its related, changeable files that need to be set. See the link below for some additional detail.

http://www.linuxjournal.com/article/9399

look up these settings... localnet, externip, canreinvite=no, qualify=yes which sends a keep alive message (so to speak) and also nat=yes which are covered in the forum, the link and

http://www-voip-info.org

Hope that gets you started,

Brian

 

[womble1]

I have just prioritised all UDP traffic to and from the Server internal IP.

all below OK...

look up these settings... localnet, externip, canreinvite=no, qualify=yes which sends a keep alive message (so to speak) and also nat=yes which are covered in the forum.