Dial Tone problems with SP3

[tdemir]

Hey there everyone,

Recently we updated our v15 system to SP3. It's all and well but, sometimes when we make a call, we cannot hear any dialing/ringing tone but the other end's phone rings. Then, when other end picks up the phone, they only hear a "buzzing noise" from our side.

This weird thing doesn't happen all the time, but only on certain numbers and it started after we updated to SP3.

Anybody else encountered this "phenomenon"?

Taylan

 

[leejor]

This weird thing doesn't happen all the time, but only on certain numbers and it started after we updated to SP3.

What type of "certain numbers"? Internal, external?

After one of these calls does the 3CX activity log show anything unusual?

 

[tdemir]

What type of "certain numbers"? Internal, external?

All numbers that showed this behavior are external numbers

After one of these calls does the 3CX activity log show anything unusual?

Sadly there are no unusual activities that I can see on logs

 

[leejor]

If these are outside calls, with no audio, there should be some sort of log, that may have an error message. This might be a Codec issue. Do you have more than one outgoing provider to see if calls behave this way over both?

 

[tdemir]

Thanks for helping me out leejor

Do you have more than one outgoing provider to see if calls behave this way over both?

Sadly, we only have 1 provider.

This might be a Codec issue.

Can be the other side not supporting our codec somehow? SP3 update was about codecs as far as I know but it shouldn't be something to broke the system.

 

[leejor]

Can be the other side not supporting our codec somehow? SP3 update was about codecs as far as I know but it shouldn't be something to broke the system.

At this point it is certainly a possibility. You could confirm which Codec(s) are supported by your provider and check to be sure that the trunk is limited to those (or perhaps even just one of them) in 3CX.

Does the 3CX Firewall Checker pass on all ports?