Switchover. Analogue phone extensions in house?

[Chris-D]

I have a TalkTalk landline (carrying Broadband). My landline house socket splits to three analogue phone extensions.  Will these old phones become redundant with the analogue switch off next year? How can I then maintain handy extensions to three rooms? Thanks.

[Gliwmaeden2]

You'd need DECT phones, so possible in different rooms but not the traditional analogue landline extensions. 

Only one analogue phone could be plugged into a Sagemcom Hub2, and no extensions whereas DECT allows other handsets to be used.