Re: Circuit/device to make internal phones ring?

["Pete Shew" <ukha_d@xxxxxxxxxxxxxxxxxx>]

Depends on what your PABX can do. Some have external "alarm"
connections that ring all phones. My FS2828 did and so does the replacement
I built around the remains. I had to add an RC circuit to extend the bell
push time to about three seconds to make sure all the phones rang well.

If you have a spare extension, you could pretend to be a phone and call the
"all phones" number if there is one, but that's a bit
complicated. I have the facility to ring all phones if a certain  phone
goes off hook (by my mother-in-law's bed), which is easy to activate.

Are you prepared to hack into the PABX and find where to apply a signal
after the line isolation and ring detect circuit?

Pete

*********** REPLY SEPARATOR  ***********

On 20/02/2005 at 10:32 LeeUKHA wrote:

>Last week I missed a delivery (of new toys) by being the shower when
the
>CityLink van called by.
>Annoyingly I thought I heard the door bell, so he didn't just stick the
>card in and run...
>
>Anyhow, it struck me that now I have a shiny new VIOM, I could hook it
>up to the doorbell and then get the HA server to ring the internal
>phones just once, rather like the Comfort system...
>
>Despite a good deal of Googling, all I can find are circuit designs to
>make a phone ring, as long as it's NOT actually plugged into a phone
>line. Fair enough as who knows what may happen at the BT exchange by
>putting ringing into the external phone line, but as I've got a PBX
>installed, is that actually a problem? The only problem then is how to
>attach the circuit?
>
>Anyone?
>
>Lee
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>Yahoo! Groups Links
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