Cordless phone with answering machine

My Philips phone shows an “o” when displaying an incoming call.

How to disconnect my Philips phone from the router?

How to turn off the answering machine on my Philips DECT phone?

How to pair/register my Philips handset with the base?

No ringtone after connecting my Philips DECT phone to router

I hear a periodic clicking when I dial a number

My Philips handset is easily out of range