How to remove phone MAC address from extension in v16?

[Orionche]

Title, basically.

I've tried to do it through the extensions screen (right side X), its not showing up as registered under it. Factory reset didn't work. Its a Yealink T58. Any ideas? Google wasn't much help.

Thanks

 

[cobaltit]

Phone provisioning tab for the extension:

 

[Orionche]

Tried it, the MAC is still attached to an extension.

 

[JohnS_3CX]

Hi,

1. Reset the phone, then try to to assign it to a new extension.

2. The PBX will inform you that "this mac belongs to extension xxx"

3. Then go to that extension and simply delete the phone from the provisioning tab.

Note: If you were playing around with custom templates and have since deleted them, you may find the phone is still there with the correct mac but with another name: CyberData Emergency Intercom

 

[AWS2P]

As Cobaltit said , just click on delete end right of the line and don't forget to click ok on top of the page.

was that phone used in STUN mode until now ?

 

[Orionche]

Thanks for the reply guys.

1. Phone was reset to factory default. Didn't change anything
2. PBX still informs me that its assigned to an extension. For some reason, it switched from a normal extension to the default 000 (not sure if PBX taking the piss or one of my colleagues).
3. It doesn't show as deleteable. Since I submitted the post, he completely dissapeared from the PBX.
4. No templates were used. I have an exact same T58 on site that provisioned properly when we first installed it. Zero fuss. Works like a charm. We added a second one recently as we got access to the site again due to COVID restrictions being lifted.
5. I didn't use STUN. Running an SBC there, option 66 is on the Mikrotik router. I've added it to the address range the VLAN is on. Will see if that makes it work. It shows up on DHCP fine.
6. I am getting an "You are using an unsupported phone..." error message on the dashboard. Might not be related to this, we have intercoms and a Zoom account connected to it as well.

What am I missing here? First one was plug and play, this one is playing hard to get.

 

[JohnS_3CX]

2. PBX still informs me that its assigned to an extension.

Can you please provide a screenshot of the PBX telling you this?