Hallo *!
Here are my test results:
Gigaset -> eu.voxalot.com -> dial plan for sip.voipbuster.com and sip.voipcheap are working perfectly! All landline calls to Vienna/Austria are free and not marked as fup.
WebCallBack is *NOT* working! I try with all posible voip provider combinations (voipbuster-voipcheap, voipbuster-voipbuster, voipcheap-...), *no* signal, *without* error message! .. And not charged!
Regards & Liebe Grüße
Fla