"Graham" <me@privacy.com> wrote in message
news:et75kb$3t2$1@news.datemas.de

[snip]
[color=blue]
> You are saying the DECT handset indicates it is ringing
> on its display, but doesn't actually ring?
> If so its one of three things:
> 1) The ringer is muted.
> 2) The phone is faulty.
> 3) I have misunderstood your problem.
> As rule, DECT base stations don't need a ring signal on
> pin 3. Have you tried plugging the DECT base into a BT line?[/color]

It could be the ATA ringing output voltage. BT lines generally supply
ringing at around 75 volts or so, if the ATA is giving a lower voltage,
some phones might ring but others not.

Ivor