Alex wrote:

Anyway, what you can do is buy 2 base units & handsets (not just 1 base unit
with 2 handsets). Then register both handsets to both base units. You will
have the ability to transfer incoming calls from one handset to another,
answer or make calls at either handset, make internal calls between
handsets, hold 3 way calls and this is the good bit - the handset will use
whichever base unit it's nearest to, effectively extending your working area
(although you can't transfer from one base unit to another during a call if
that makes sense!)

Be aware though that it may well take quite a few (non-obvious)
keystrokes to transfer calls and to switch from one line to the other.
Most modern DECT phones are built down to a price and thus have as few
buttons as possible when more buttons would make them much easier to
understand and use.

Most DECT phones are good as 'ordinary' phones but not nearly so good
for more complex requirements.

--
Chris Green