Call Quality Problem V20

[Benjamin Müller]

I have the Problem that the quality of the call is bad sometimes and the caller is not heard properly by the 3cx user.

Following the error.
Caller A is calling to internal user B.
A is hearing B without a problem
B hears A with hacks and delayed

This problem is with internal calls between desk phone and smartphone app and also with external calls to desk phone
It is not at every call only sometimes.

Does someone has had this problem with v20?

 

[Nathan@Voxtelesys]

Can you use the built-in quality monitor to see where the problem lies?

 

[Benjamin Müller]

I tried. But the call quality manitor always shows a perfect quality even if the quality is very bad.

 

[SteveITS]

Try the phone's speakerphone instead of the handset.

 

[ivank]

I tried. But the call quality manitor always shows a perfect quality even if the quality is very bad.

Could you share a sample report, without any sensitive info?

 

[Benjamin Müller]

It seems like it is better now. SIP ALG was turned on on the Firewall.

 

[Samuele - Eurocom]

I have the Problem that the quality of the call is bad sometimes and the caller is not heard properly by the 3cx user.

Following the error.
Caller A is calling to internal user B.
A is hearing B without a problem
B hears A with hacks and delayed

This problem is with internal calls between desk phone and smartphone app and also with external calls to desk phone
It is not at every call only sometimes.

Does someone has had this problem with v20?

Good morning, I also experience this problem only in some phones and on some PBXs.
In particular I also experience these issues with the V18 version, I have all Yealink phones.
The first case is like yours:
A hears B without problems
B hears A with hack and delay or zero
The second case:
the phone starts making croaking noises with both handset and speakerphone, just then rebooting the phone restarted correctly.
I opened a ticket to Yealink and it replaced my phone in RMA.
The last problem I'm experiencing in another customer always just in one phone, that A and B hear each other for a while and then at some point B can't hear A anymore.