
Gigaset Dx800a

Gigaset Dx800a
I am switching my telephone connection from Swisscom ISDN to IP, or my cable internet provider Qickline with only one number. My Quickline cable modem without WLAN only has an analogue output (my WLAN router is connected to the modem). Can I use the DX800a on the analogue port of the modem? Does this have any disadvantages compared to a direct iP connection? Can I also connect an analogue door intercom to the analogue fax port of the DX800? (until now this was connected to my GIgast 4170isdn).