T48 on FritzBox - redail calls from FritzBox-AnsweringMachine messages

[OptoInspect Netzwerkservice GmbH]

Hello to the Forum,
I had an T48S working great on a FritzBox7490.
One Problem is that we can't redail recorded calls on the answering machine inside the FritzBox. If we hear the message and press "3" for redail, we have a busy Signal. If we contact the answering machin from a normal analoge phone, it works. So I think, some configuration issue on the T48S
Have you any idea?

Greetings from Berlin!

Detlef

[Lucia_Yealink]

Dear Detlef,

For your problem, what do you mean about the answering machine inside the FritzBox?　Ｗhat is this? What is the message you hear? From where? Why do you press 3 to redial the call?

In the SIP phone, we can redial the call in the phone history. In the phone panel, there is a redial key.

Best Regards,
Lucia