intercom using home telephone circuit

[interuser]

Hi ,
I have a 2 floor home and I would like and make an intercom using the
existing telephone circuit. Since every room has a telephone the
problem is making the telephones ringing. How would I do that?

 

[Ken Taylor]

Hi ,
I have a 2 floor home and I would like and make an intercom using the
existing telephone circuit. Since every room has a telephone the
problem is making the telephones ringing. How would I do that?

Buy a small PABX on Ebay. You'll probably need to rewire the house as I'll
bet the current wiring is a single pair being paralleled throughout the
house. Almost any method you use for an intercom will require separate a
pair for each room.

Ken

 

[Dmitri]

interuser wrote:

Hi ,
I have a 2 floor home and I would like and make an intercom using the
existing telephone circuit. Since every room has a telephone the
problem is making the telephones ringing. How would I do that?

DFE Communications Corp. make a device they call "single line
phone-to-phone intercom system" called TNT-8000. They do not have a Web
page, believe you or not, so you'll have to call them at 800-822-4TNT to
find out more. Basically, this device makes it possible to share a single
line that is expected to be paralleled between all the phones in the
house, the traditional way phone wiring has been done residentially.
If you ask me though, I'd say that the best way would be to get a hold of
an inexpensive KSU or PBX phone system like another poster suggested here.
You will have to re-wire the house so every phone has a separate cable
coming to the phone switch location, but in the long run I think it is
well worth it.


--
Dmitri Abaimov, RCDD
http://www.cabling-design.com
Cabling Forum, color codes, pinouts and other useful resources for
premises cabling users and pros
http://www.cabling-design.com/homecabling
Residential Cabling Guide
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[LeucoB]

Hi ,
I have a 2 floor home and I would like and make an intercom using the
existing telephone circuit. Since every room has a telephone the
problem is making the telephones ringing. How would I do that?

There's usually a number the telco techs call to get a callback on the
same line you're calling from.
It used to be your own number, dial it, then after 1 blip, hang up and
then the phone rings back. ( Telus has downgraded their system , so
that doesn't work here in BC anymore :-( )
Might try to get in touch with your local telco tech & get the
callback number from him ( $0.00 intercom) ;-)

 

[LeucoB]

There's usually a number the telco techs call to get a callback on the
same line you're calling from.
It used to be your own number, dial it, then after 1 blip, hang up and
then the phone rings back. ( Telus has downgraded their system , so
that doesn't work here in BC anymore :-( )
Might try to get in touch with your local telco tech & get the
callback number from him ( $0.00 intercom) ;-)

Sorry, I also should have said that with this callback method, that
when the phone rings back, keep waiting on your phone until the
ringing stops (means someone in the house has picked up another
extension) then pick up your phone again.
I dunno how clear that is..but it used to work for me.

 

[JR North]

Radio Shack used to sell an intercom system that used the AC wiring for
TX/RX. Worked well. Some other maker may make one. Much easier than
rewiring the phones.
JR

 

[NSM]

Hi ,
I have a 2 floor home and I would like and make an intercom using the
existing telephone circuit. Since every room has a telephone the
problem is making the telephones ringing. How would I do that?

Buy a set of FM intercoms - much cheaper and easier.

 

[Jumpster Jiver]

Hi ,
I have a 2 floor home and I would like and make an intercom using the
existing telephone circuit. Since every room has a telephone the
problem is making the telephones ringing. How would I do that?

Buy one of the newer multi-handset cordless phone systems. I know the
Panasonics let you call from the base or any handset to any other
handset. The sell some models with three to five handset capability,
but most come with only two handsets and you must buy the additional
units seperately.
I use this in my home as a one-line telephone, and three-station
intercom ( base plus two handsets )

 

[jakdedert]

Radio Shack used to sell an intercom system that used the AC wiring for
TX/RX. Worked well. Some other maker may make one. Much easier than
rewiring the phones.
JR

They also sell (sold) one which uses the phone line to carry the RF from one
station to another...a little more reliable than the ones which inject RF
into the power line. Those get stymied by being plugged into outlets which
are on another phase of the AC network in ones house.

I've actually converted some of the power line ones to work on the phone
line...pretty easy to do. I find them all the time at thrift shops for next
to nothing. They always seem to work fine.

jak

 

[keith]

Buy one of the newer multi-handset cordless phone systems. I know the
Panasonics let you call from the base or any handset to any other
handset. The sell some models with three to five handset capability,
but most come with only two handsets and you must buy the additional
units seperately.
I use this in my home as a one-line telephone, and three-station
intercom ( base plus two handsets )

Years ago one would simply dial 4191 or 1191, hang up, and woit for the
phones to ring. My bet is thet there is still such a "test" facility out
there.

 

[Dave]

In my house I used the 2 spare wires in the phone cable and added a
cheap buzzer by the phones. Connected at the calling phone was a
battery with a button that when activated sounded the buzzers at all of
the phones. The battery/button can be placed near as many phones as
desired as long as the polarity is maintained.
Dave