Problem with forwarding call after no answer - SIP-T26P / SIP-T27P

[Yves]

Hi,

All our phones at the office are from Yealink and we recently thought it would be better to transfer our calls in case of absence.
I tried the “always forward” option and that was a succes but when I tried the “no answer forward” option we stumbled upon a problem which we can’t figure out how to solve…

We have 2 different Yealink phones with the same problem:
- SIP-T26P
- SIP-T27P

After enabling the “no answer forward” option (with the other 2 options disabled) we put in the telephone number and the ring time (no on/off code).
—> When the ring time is on 12 sec the phone forwards the call to a cellphone but only does this for about 2 rings and then switches back to the Yealink to retransfer the call after 12 seconds. It’s looping continuously.
—> When the ring time is anything above the 12 sec the telephone says it’s forwarding but nothing happens.

Does anyone have an idea of what the problem might be?

Thanks in advance!