3CX and Grandstream GPX2170 no inbound/outbound audio

[Ionut.STEFAN]

Hello,

We've installed a new 3CX server for one of our customer and tried to make some tests with and Grandstream GPX2170 phone.
The problem is that we get no audio on the phone. Anyone had this problem before?

What we tried:

• In 3CX Android and iOs app sound is ok so the 3CX server works ok
• Tried both STUN and 3CX SBC and still no sound
• Upgraded to the latest firmware on the phone
• 3CX firewall test is ok
• Enabled PBX delivers audio
• Changed the audio codecs order from the phone and still no success

Do you have ideas how to solve this problem? We don't have another phone to test.
We had a buggy audio only once on the first test and after that we had no inbound/outbound sound..

What should we try?
Thank you!

 

[Saqqara]

Please provide your network setup . you say you tried STIN and BC and this does not work.

Is the 3CX hosted in the cloud or phones local to 3CX server

 

[Ionut.STEFAN]

3CX is hosted in cloud at Amazon.
Yes, tried both STUN config and 3CX and still no sound. Phone provisions ok, but when we make a call we can't hear anything.

 

[Saqqara]

Does echo test work *777

What version of 3CX are you running

Using 3CX standard templates.

 

[Ionut.STEFAN]

We tried now the echo test and still no audio.

 

[Ionut.STEFAN]

3CX version 16.0.5.611 with standard Templates.