Hi, Consider the following situation: - Fritzbox1 (model 7050, located at my place) is using voipbuster.com to make VOIP calls. It has an entry in its phonebook firstname.lastname@example.org (with Quick-dial code **701) to call Fritz!box2 directly (without using a fixed phone number). - Fritzbox2 (model 7050, located at another place) is using voipcheap.com to make VOIP calls. It has an entry in its phonebook email@example.com (with Quick-dial code **701) to call Fritz!box1 directly (without using a fixed phone number). This used to work well (the quality was better compared to calling via the fixed phone number), but suddenly it doesn't work anymore! I get the following error message in the log: "Internettelefonie mit (loginname) über voipcheap.com war nicht erfolgreich. Ursache: Bad request (400)". What can that be? Doesn't Finarea allow internals calls anymore? Also strange: when I pick up my phone and dial "**", I immediately get some kind of busy (or error?) tone on my phone. Is that normal? Should I just follow with 701 anyway? PS. Can anyone explain me what the "vanity" code means? What is the difference with the quick-dial code? Thanks for all the help!