Duplicate phones do not ring and are not removed

[Albert464]

Hello,



Yesterday I updated the Yealink t46s phone firmware, the phones are now duplicated on the "Phones" tab and do not ring.

I tried to delete them from the "phone provisioning" tab hoping that they would be deleted from the "Phones" section but nothing happens.



Furthermore, the two cloned phones do not ring, while the others do.

 

[Albert464]

Update:
I removed the phone from the provisioning tab of the extensions, I reset the phone and redo the supply by adding the phone again.
After entering the username and password again, the customer still finds the word "no service". In the Dashboard I see again that two cloned phones have been added for the same extension, as on the screen before.

 

[Lee Cramman]

Have you tried a factory reset of the affected phones?

 

[Albert464]

Have you tried a factory reset of the affected phones?

Yes, but after provisioning the problem reappears.

 

[Lee Cramman]

Very odd. The only other post I've seen recently about this was on a system using STUN provisioning.

 

[YiannisH_3CX]

Very odd. The only other post I've seen recently about this was on a system using STUN provisioning.

I believe these are also STUN phones.

@Albert464

Please make sure that SIP ALG is off on the PBX side and on the remote location side and that you have allocated a dedicated SIP port per phone as well as unique SIP ports and those are forwarded to the local IP of the phone at the remote site.
https://www.3cx.com/3cxacademy/videos/intermediate/configuring-remote-extensions/

 

[Lee Cramman]

I believe these are also STUN phones.

@Albert464

Please make sure that SIP ALG is off on the PBX side and on the remote location side and that you have allocated a dedicated SIP port per phone as well as unique SIP ports and those are forwarded to the local IP of the phone at the remote site.
https://www.3cx.com/3cxacademy/videos/intermediate/configuring-remote-extensions/

Or use an SBC!