Question about AVM FRITZ!Fon C5 International / CH

"It depends", as the saying goes.

If you have a Fritz!Box as your (new) DECT base station: Probably the easiest way is to register the Aton CL303 with the new base station (see p.36 in the user manual, https://www.swisscom.ch/dam...) - the Fritz!Box or Fritz!Fon should then recognise and adopt the phone book. See also https://avm.de/service... which a) indicates that this should work and b) points out possible sources of error in case of problems).

If the Fritz!Box does not recognise and accept the Aton phonebook directly or if you do not have a Fritz!Box, try the function "Send phonebook to other handset" (p.19 in the user manual) on the Aton CL303. Both phones must be registered to the same base station (their old or the new one).

If you have a Fritz!Box but the direct transfer does not work, then the "easiest" way is probably via the phone book synchronisation of the Fritz!Box: in doing so, you link a Google/Gmail account in the Fritz!Box as phone book (http://contacts.google.com). On the Aton, you export the phone book as a vCard via Bluetooth (p.20. manual) to your PC and then upload this vCard file to Google Contacts (to be found on http://contacts.google.com in the menu under "Advanced"). From there they are then synchronised in the Fritz!Box.

Personally, I use the synchronisation with Google: With this, I enter/change all my contacts once, on any device (mobile phone, PC, Fritz!Box, Fritz!Fon) and also have a backup in case a device should be defective.

I find the synchronisation with Google super practical. Then new contacts or phone numbers automatically end up on the C5 or vice versa on the Android or iPhone.