[comp.dcom.telecom] Wanted: Answering Machine Autodisconnect Circuit

David Nyarko <nyarko@ee.ualberta.ca> (04/20/91)

Could anyone give me pointers to a circuit which would automatically
disconnect an answering machine when at least one phone connected to
the line is off hook (picked up), and restore the normal operating
state of the answering machine, when all phones are back on hook.

Please email to nyarko@bode.ee.ualberta.ca

irvin@northstar.dartmouth.edu (04/22/91)

In TELECOM Digest V11 #297, is written: 

> Could anyone give me pointers to a circuit which would automatically
> disconnect an answering machine when at least one phone connected to
> the line is off hook (picked up), and restore the normal operating
> state of the answering machine, when all phones are back on hook.

I have such a device, called PHONE ALONE.  When any extension in the
house is picked up, it disconnects whatever device is connected to it
(in my case an answering machine), but it is advertised to be used
with a phone extension (for privacy).  When the extension is hung-up
it resets to normal operation.

I believe I got this sucker from The $harper Image.  If you can't find
it let me know and I'll try to find out where it can be had.


Tim Irvin

"Robert E. Zabloudil" <nol2105%dsacg2.dsac.dla.mil@dsac.dla.mil> (04/25/91)

Me too.  Is there enough interest for a summary?  Thanks.


[Moderator's Note: Perhaps someone will summarize the mail they
received on this subject and send it along.   PAT]

Julian Macassey <julian%bongo.UUCP@nosc.mil> (04/25/91)

In TELECOM Digest V11 #297, is written: 

>> Could anyone give me pointers to a circuit which would automatically
>> disconnect an answering machine when at least one phone connected to
>> the line is off hook (picked up), and restore the normal operating
>> state of the answering machine, when all phones are back on hook.

Go down to your local Radio Shack "America's Technology Store" (Made
in Taiwan). Ask for "The Teleprotector Voice and Data Guard". Part
Number 43-107. Cost $7.95.

	Take it home and plug it in to your wall jack and plug the
Answering machine into it. If you lift another phone in the house, the
answering machine will be cut off.

Works with phones that get taken off hook when you are using your
modem. In this case, put the teleprotector on the offending phone when
the modem is off hook, the phone will be dead.


Julian Macassey, n6are  julian@bongo.info.com  ucla-an!denwa!bongo!julian
742 1/2 North Hayworth Avenue Hollywood CA 90046-7142 voice (213) 653-4495