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No audio in calls to Yealink T27P firmware 45.81.0.61

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rdf

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Hi,
I have several Yealink phones that I updated from *.81.0.60 to *.81.0.61.
With the updated firmware no audio could be heard in calls between extensions.

I have the 3CX Professional Edition Version 15.5.5, cloud hosted in Google Cloud Platform on Debian.

Here I summarized the combinations i tried

If .60 T27P calls a .60 T27P -> Audio OK
If .60 T27P calls a .61 T27P -> No audio
If .61 T27P calls a .60 T27P -> Audio OK
If .61 T27P calls a .61 T27P -> No audio

If .60 T27P calls a .61 T46G -> Audio OK

If .61 T27P calls a .60 T46G -> Audio OK
If .61 T27P calls a .61 T46G -> Audio OK

If .60 T46G calls a .61 T27P -> No audio
If .60 T46G calls a .60 T46G -> Audio OK
If .60 T46G calls a .61 T46G -> Audio OK
If .61 T46G calls a .61 T27P -> No audio
If .61 T46G calls a .60 T46G -> Audio OK

It seems there's something special with .61 T27P receiving calls...

Is there anything I can do to fix this?
 
Last edited:
Hi rdf,

Please let us know what version of 3CX Phone system are you on.
 
Sorry, since this is an excerpt from another post i forgot to repeat the context. I have edited the original post too.

I have the 3CX Professional Edition Version 15.5.5, cloud hosted in Google Cloud Platform on Debian.
 
Yep, that turned out to be a timely coincidence... (those happen apparently)
 
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