On Wed, 15 Aug 2018 10:54:38 +0100, Robin wrote:

We'd certainly miss the intercom & call-transfer facilities on
DECT
phones. Can they be replicated using wifi on PAYG Smart phones?

Not natively. You can do it on the VOIP side, but it needs some
support from your service provider - essentially you have multiple

extensions all with different VOIP logins.

Thanks. I have rejected the option of running my own PABX bearing in
mind the probability of my mental decay and pre-deceasing 'er indoors.
I'll look again at VOIP providers with that in mind.

Or get a VOIP capable DECT base station and DECT handsets. Such as
the Gigaset N300 IP. That can handle 6 VOIP accounts and a POTS line.
That's what we have and works well. Wired ethernet to the base
station, currently three DECT handsets wirelessly conected to that.
You can select which handset(s) ring for a given incoming VOIP call
and have different ringtones. Normal DECT paging and intercom
facilties of course.

--
Cheers
Dave.