one way audio on T23G from external call

[obeyealink]

Hello,
I have a problem with the phone Yealink t-23G with firmware 44.80.0.70 and a telephone switchboard draytek vigor ippbx2820 with the latest firmware.
When you receive a call from the outside you do not hear the sound, while the caller hears.
If it makes a call to the outside or between internal phone audio is heard.
You do not hear the audio in the handset it with the hands.
I tried with all types of audio codecs, but nothing changes.

I noticed that on incoming calls if I press the hold the line falls, while this does not happen on outgoing calls.

With T-22 or cordless phones W52P there are no problems.
I am attaching documentation, what can I do?
Best regards,
Oberdan Albertoni

[James_Yealink]

Hello Oberdan,

We will check the pcap trace feedback to you soon.
If you can provide level 6 syslog it will be better.

Thanks,

[obeyealink]

(11-02-2015 08:03 PM)Yealink_James Wrote:  Hello Oberdan,

We will check the pcap trace feedback to you soon.
If you can provide level 6 syslog it will be better.

Thanks,

Hello,
I attach the file with the level 6 syslog.
Thank you.

[obeyealink]

Hello,
I try with new T-23G with stock firmware 44.80.0.25 but there is the same problem, I tried an old T20 and T22 and the sound is heard in both directions.
There is news of this problem ?
Best regards,
Oberdan Albertoni.

[obeyealink]

The are any news ?
Best Regards
Oberdan Albertoni.