AVM FRITZ!Box 6890 LTE International
Question about AVM FRITZ!Box 6890 LTE International
I operate the box with Sunrise LTE and Sunrise ADSL and boosted both accesses. The IP telephony via Sunrise ADSL keeps failing (error 403). I connect the telephones to the Fritzbox via Dect.
I wanted to put this box into operation in my home in Italy. All attempts failed to set up IP telephony without errors. I have returned the box. Unfortunately, I cannot help any further.