"David" wrote in message
oups.com...
The telephone numbers can
be to mobile or landline telephones, it doesn't matter, but the
speech-dialler must be plugged in to a landline socket, or
hardwired, for it
to work of course.

Yes that is the downside of that, if they cut the cable.


That's where the monitored line comes in to play. An alarm receiving centre
would ping the line every few minutes to see if it still responded properly.
But with DIY alarms this can sometimes be expensive to arrange through your
telephone supplier.