Solved - Yealink T54w Won't Register (2024)

Hi all,

I have recently purchased a Yealink T57w (not 54w in the title oops!) to use as a router phone. I have had this working sucsessfully. We recently switched broadband providers and changed router etc.. and the internet connection is all online and working, however this T57w will not register with 3CX cloud.

I have re-provisioned it and upgraded the firmware to the latest version however still no luck. I'm not sure if the phones been blacklisted - or how to tell if it has / unblacklist it.

Oddly the device shows green under the router phone section (on voice and chat tab)

But in the extensions field it shows as this

On the actual phones web GUI it just says registering followed by this:

Oddly, the other phone T33G is working fine, behind the T57W router phone. But the T75w won't work itself.

Thanks
Matt

mchalk said:

Very frustrating. I've unregistered the phone for now. Going to have to leave it 24 hours to see if it is a blacklisting issue - really annoying you can't go in an remove an IP from a blacklist.....

Click to expand...

You can if you pay for a Pro license.

Alphabetic said:

You can if you pay for a Pro license.

Click to expand...

Oh interesting that you can on a pro license. I would just like to get the thing actually working (like it was before!) We are only a small company with 8 employees so we don't need extra extensions.... I'll wait it out for now.... if it still doesn't work then I'll have to have a look at it...

Pro offers much more then just having unlimited extensions.

https://www.3cx.com/ordering/pricing/features/

Have you tried a factory reset of your phone?

Event logs?

mchalk said:

Yeah factory reset the phone, re-provisioned a couple of times. Updated to the latest firmware 96.86.0.81 (had that issue before). But it's had a few attempts now so it's probably blacklisted it again

Click to expand...

You'll only get blacklisted if the credentials were wrong. If you delete the phone from the ext and add it again, what is output in the event logs?

Alphabetic said:

You'll only get blacklisted if the credentials were wrong. If you delete the phone from the ext and add it again, what is output in the event logs?

Click to expand...

Alphabetic said:

You'll only get blacklisted if the credentials were wrong. If you delete the phone from the ext and add it again, what is output in the event logs?

Click to expand...

This is the event log after I reprovision it....

Yet it's still red in the users section and the device itself says no service...

tbf if you were blacklisted you wouldnt be able to log in to the admin console.

Have you checked your router to see if it's doing any SIP ALG?

Yes SIP ALG will break things.

It sounds dumb but check your phone is set to use itself as its SBC.