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Calls has no sound on T20 phone
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Kollol Biswas Offline
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Post: #1
Calls has no sound on T20 phone
Everything is fine on my phones and calls are being received properly. But on few phones, we find no voice after taking a few calls. A manual restart / backend reboot works for a while but problem returns after 5 mins. The phones are around 3 years old.

What can be possible reason behind this issue?
06-13-2015 04:34 AM
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Flora_Yealink Offline
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Post: #2
RE: Calls has no sound on T20 phone
Hi Kollol,
For the issue, do you mean the scenario is like below,
T20 make a call to B , B answer the call , neither T20 nor B can hear the voice ,
if you reboot the phone, the call will be normal again ,right?
please help share us below information .
1) how many phones you have ? all have the same issue?
2) please upgrade to the latest version
http://support.yealink.com/attachmentDow...3.0.50.zip
3) if the issue still exist on the latest version, please share us the pcap trace, level 6 syslog and config.bin file for debug , please collect these information for both working scenario and issue scenario .
You can refer to below link for how to catch these information.
http://forum.yealink.com/forum/showthread.php?tid=1319
Best Regards!
Flora
06-13-2015 05:45 AM
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Kollol Biswas Offline
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Posts: 2
Joined: Jun 2015
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Post: #3
RE: Calls has no sound on T20 phone
Hi Flora,

thanks for the reply. You have guessed the right issue. I have already updated the firmware but it has not helped much. Here is a log attached for a faulty one.

Thanks again,
Kollol


Attached File(s)
.txt  Syslog_report_101.txt (Size: 105.91 KB / Downloads: 2)
06-16-2015 06:52 PM
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Flora_Yealink Offline
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Posts: 265
Joined: Oct 2012
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Post: #4
RE: Calls has no sound on T20 phone
Hi Kollol,
I have checked the log but haven't found the error.
would you please help reproduce the issue again and provide us config.bin file , pcap trace and new level 6 syslog again that we can submit them to the engineer for debug?
also, please help provide us below information :
How many phones you have ? all have the same issue?
Best Regards!
Flora
06-25-2015 05:57 AM
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