
FRITZ! Fon C4 International / CH

FRITZ! Fon C4 International / CH
Hi. We have a Fritz Box 7430 together with two Fritz Fon C4 (one in the basement and the other upstairs). Now one of them has gone out and we can no longer order one. Is the new Fritz Fon C6 compatible with the rest, or will both phones ring again and will the phone list etc. be transferred? Or do I have to buy two new C6s? (Sorry, I'm not that technically gifted :-)