Solved Yealink phone shows duplicate extensions

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Hi all,

I have a 3CX setup with Yealink T46S IP phones. Some of my phones have duplicate extension showed on the main display. The phones are autoprovisioned, and there are no duplicate entries in the phone list

 

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the phone says "no service" in the corner so I dont believe the provisioning is being successful.

What is the provisioning type of the phone?

Factory reset the phone, check it's on the latest firmware and try provisioning again.

https://www.3cx.com/support/phone-firmwares/

 

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Actually, this is happening when the service is restored. The phone is on the latest firmware 66.85.0.5. The provsioning type of the phone is automatic via https, served via DHCP option 66.

 

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Have you specified "line" BLF keys under that extension?

 

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This is my setting for that extension

 

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The "Line" BLFs is why you see those 2.

The EXT registration is in the far upper left corner. The 2 you see are the keys.

clear those BLF keys and the problem goes away (or the 2nd one at least)

dont forget to reprovision.

 

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Thank you, this solved this issue