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Choppy sound on T32G (PCAP included)
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phuygens Offline
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Post: #1
Choppy sound on T32G (PCAP included)

A few months ago we've deployed several Yealink T32G's with one of our customers.
We have several intermittent audio issues.
This is the setup:
- 3CX phone system on site A, +/- 20 phones are located on the local LAN on site A.
- 3CX SBC is deployed on site B, +/- 20 phones are located on the local LAN on site B.
- The choppy sound is on all the phones, but intermittent (at both locations), internal & external calls...

There is QoS implemented on the local LAN and on the 3CX SBC.

I've a PCAP attached on this post.
I've also a PCAP available (made this on de 3CX server) of a whole day (with around 70 phone calls in it, if you need this, I will make it available on dropbox or something like this).

The firmware of the phones is on (last 3cx supported firmware).

The VAD, CNG & echo cancellation is enabled.
The jitter buffer is as default: adaptive, min 0, max 300, normal 120.
Should I change this to fixed 120,120,120?

Thanks for support!

Kind Regards,

Attached File(s)
.pcap  PCAP Support Forum.pcap (Size: 190.23 KB / Downloads: 5)
11-28-2015 05:43 PM
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LeeDraper Offline
Junior Member

Posts: 4
Joined: Jun 2015
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Post: #2
RE: Choppy sound on T32G (PCAP included)
Hello Phuygens

I noticed from the pcap that you are using the G722 codec. I had an issue where when a T23G was calling a conference the audio was choppy. I change the phone to use PCMA (aLaw) codec and the problem went away.

I hope this is of some help.

12-05-2015 12:33 AM
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