Yealink W80B Cordless

[Spencer Bizzell]

Hi There,

We have installed a 3CX system for a customer using the W80B Cordless Multicell System and we are having major problems.
3CX Version : 16.0.611
We have 4 Bases - 1 x DM (Master) + 3 x Bases (Cells).(Firmware currently running: 103.83.0.75, we just upgraded from 103.83.0.75 but not improvement.
There are 22 Cordless phones - W56H cordless phones (Firmware currently running: 61.83.0.90).

We are having two major issues, and the first and most important one is 40-50% of the incoming calls are having one way audio (The caller's audio is present in the pcap captures) the receiver / Cordless handset's audio is not present in the pcap and their symptoms are just an echo of them selves.
This is intermittent on all the phones by the looks of it while testing for 4 hours onsite today.
Can PM the captures for anyone that can help?

Then the second issue is the, the cordless phones which are in the ring groups intermittently reject the invite and don't ring for some reason. So then they don't ring.
Below shows the invite being rejected


Please can you advise if anyone else is having issues with the Yealink W80B Cordless systems, and if they have managed to resolve it. We have escalated our issue to Yealink and we are waiting for feedback. The Yealink T46S's are working fine on the site no problems.


Thanks,
Spencer

 

[craigreilly]

You do not tell us much about the system - 3cx local to phones or incloud? SBC in use if PBX is in the cloud?

 

[Spencer Bizzell]

You do not tell us much about the system - 3cx local to phones or incloud? SBC in use if PBX is in the cloud?

Apologies. 3CX is hosted (Azure) and we are using STUN, no SBC.

 

[craigreilly]

I would definitely be using an SBC for this.
https://www.3cx.com/docs/3cx-tunnel-session-border-controller/