Yealink T46S Forwarding does not work!!

[Müller]

Hello everyone!

We have a Yealink T46S phone. and we noticed that the forwarding does not work!
Transfer is yes, so if we pick up the phone and transfer it.
But Forwarding is not!
If there is an incoming call, it displays it, if forwarding is active, it immediately says forward : and the number to which it will be forwarded, but nothing!
To the incoming caller, it "gives the sound that it is ringing", but the number to which it is forwarded does not ring!

I tried to set it up on the phone as well as on the web interface!
Constantly busy, no answer and program button doesn't work! But he went earlier!

I already did a factory reset!

Frimware:66.85.0.5

Could you help me? Give a tip!