Solved Problems with speech quality

[Tyler.Calhoun]

I have a very strange problem.
Since this morning I have extreme problems with the voice quality.
The internet connection is fine. Have you seen something like this before? Frequent jitter drops

Where would you start troubleshooting?

Thanks

 

[Alphabetic]

Is this every call?

Is it internal and external?

Have you rebooted network and 3CX?

have you asked your provider?

Does the problem exist in call recordings?

 

[Arne Larsen]

are you using the same codec in both ends of call

 

[Tyler.Calhoun]

I am sorry for my late reply. I was on vacation.

The problem occurred only on external calls.

Here is what I did:
1. Restarted 3CX
2. consulted the sip provider
3. opened a ticket with the internet provider
4. restarted router
5. restarted all switches

It just did not get any better.
The solution was to restart the firewall.

This was a really strange problem.
Thank you

 

[NicholasP_3CX]

Glad you got that resolved.

Just as an FYI for everyone, what I always recommend when troubleshooting audio issues is to always troubleshoot as close to the source of the problem as possible.

Always do a packet capture from the PBX to establish where the problem lays. If the PBX is receiving junk audio, it will relay that through to the end point.

If the audio is coming in as junk from the provider, take it to the firewall and do a capture from that.

If the bad audio is internal, you can do a capture on your IP Phones too.