Yealink T46S fails to provision

[smpltech]

I have 8 phones on a remote network, all were working, and 1 day 1 stopped registering, I defaulted the phone, deleted the ext in 3cx, re-created it, set it to STUN external and unchecked the "disallow use outside of LAN), and checked "PBX delivers audio".

In event log I see this-
RPS request for Yealink T46S-yealinkt4xopus IP Phone of John Smith (104) delivered successfully

The phone itself is just sitting at default settings, it never gets a config, the default admin login stays instead of using the new admin login in 3cx.

I have a custom template, which just defaults the codec to opus.

I reboot the PBX, firewall, everything.

PBX is debian in GCP, latest 3cx updates. Firewall is pfsense.

Phones all run firmware: 66.85.0.5

After setting the device to local, and selecting the hostname in the pbx it was able to provision, but of course the phone came up with STUN disabled, and it would not register. I flipped it back to STUN Remote in 3cx, and reprovisioned/reboot phone, now it is registered...not sure why I would need to do all that.

Yes, I know I probably need an SBC onsite, didnt really want to fool with that, but will work on that.

 

[JohnS_3CX]

Hi @smpltech

Since you are troubleshooting, the first thing you need to do is not use a custom template since you are adding an extra variable into the mix. Try to set up the phone using the "vanilla" way first and see how that goes.

This means you delete the phone from the the extension and save. Then you add a new phone using the default template, and save. Notice the Event log and confirm the RPS entry succeeds.

Factory reset the phone and allow it to boot and contact Yealink. If everything is successful, you should see it ask for user/pass as per our guide


https://www.3cx.com/sip-phones/yealink-t4-series/