Solved Yealink t48g not working with 3cx.

[Dreamwebs]

I have a new Yealink T48G.
I installed the Yealink trough the provisioning link, but i get an error:

Register Status: Register Failed

I don't know why, the username and password are 100% correct.
Does anybody have tips what more to check to get it working?

Thank you!

 

[leejor]

If you check the 3CX Activity log, you can check for a registration attempt, and, if there is, if it is a password issue, or something else. If there is no attempt at registration, then the set is trying an incorrect address. Is it a "local" set?

 

[Dreamwebs]

Thank you leejor, good idea!

I installed 3cx on a external debian server and use the yealink in my office.

 

[Dreamwebs]

This was in the logs:

SIP request (REGISTER) from 84.28.236.1 was rejected. Reason: Block WAN requests is ON.

 

[Dreamwebs]

Found it!

Disallow use of extension outside the LAN was turned on.

Thank you so much!