[Telecom] Seeking info on Model 200 Universal Hold Device

[Telecom] Seeking info on Model 200 Universal Hold Device
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Subject Author Date
[Telecom] Seeking info on Model 200 Universal Hold Device Steven Lichter 01-09-2008
Posted by Steven Lichter on January 9, 2008, 10:17 pm
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I was digging through a box thAt had old telephone stuff and found a
Model 200 Universal Hold device made by a company called GTI. It looks
like it plugs into an A/C outlet then a phone jack. I seem to remember
that it would allow you to put a phone on hold and then pick another one
up. Anyone know anything about this.
--
The Only Good Spammer is a Dead one!! Have you hunted one down today?
(c) 2007 I Kill Spammers, Inc. A Rot In Hell Co.


Pure Networks
Posted by danny burstein on January 10, 2008, 11:43 am
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>I was digging through a box thAt had old telephone stuff and found a
>Model 200 Universal Hold device made by a company called GTI. It looks
>like it plugs into an A/C outlet then a phone jack. I seem to remember
>that it would allow you to put a phone on hold and then pick another one
>up. Anyone know anything about this.

If it's the one I'm thinking of... it let you have multiple
single line phones and retrofit in a "hold" function by
doing something like the following:

a: have your three (let's say) phones hooked up
to three regular rj-11 outlets (or even hardwired).

b: wire this box in as well.

c: when you've got a call you want to put on
hold so you can move to another phone:

1: tell the person you're putting the call on hold
2: flash the switchhook ?twice?
3: the box "hears" this, sends a short warble
tone across, and places a "bridge" on the line
to "hold" it active
4: hang up your phone, walk to second, and lift.

- or I could be totally wrong...


--
_____________________________________________________
Knowledge may be power, but communications is the key
                 dannyb@panix.com
[to foil spammers, my address has been double rot-13 encoded]


Posted by Steven Lichter on January 10, 2008, 12:40 pm
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danny burstein wrote:
>
>> I was digging through a box thAt had old telephone stuff and found a
>> Model 200 Universal Hold device made by a company called GTI. It looks
>> like it plugs into an A/C outlet then a phone jack. I seem to remember
>> that it would allow you to put a phone on hold and then pick another one
>> up. Anyone know anything about this.
>
> If it's the one I'm thinking of... it let you have multiple
> single line phones and retrofit in a "hold" function by
> doing something like the following:
>
> a: have your three (let's say) phones hooked up
> to three regular rj-11 outlets (or even hardwired).
>
> b: wire this box in as well.
>
> c: when you've got a call you want to put on
> hold so you can move to another phone:
>
> 1: tell the person you're putting the call on hold
> 2: flash the switchhook ?twice?
> 3: the box "hears" this, sends a short warble
> tone across, and places a "bridge" on the line
> to "hold" it active
> 4: hang up your phone, walk to second, and lift.
>
> - or I could be totally wrong...
>
>
That sounds right, I'll give it a try, but there could be problems
since I have call waiting and 3 way calling, hitting the hook switch
could activate those functions. My Nortel phone has a link button so
hitting the hook should not cause a problem. I don't have any real use
for it since all my phone all have holds on them. Found a lot of other
old stuff including Bell and GTE tech manuals for working on all kinds
of telephone. Those I can use.

Thanks for the information

--
The Only Good Spammer is a Dead one!! Have you hunted one down today?
(c) 2007 I Kill Spammers, Inc. A Rot In Hell Co.


Posted by Scott Dorsey on January 10, 2008, 12:27 pm
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>I was digging through a box thAt had old telephone stuff and found a
>Model 200 Universal Hold device made by a company called GTI. It looks
>like it plugs into an A/C outlet then a phone jack. I seem to remember
>that it would allow you to put a phone on hold and then pick another one
>up. Anyone know anything about this.

That is indeed what it does. It puts a 1K or so load across the phone
line and holds it as long as the line voltage stays above a certain limit.
You hold the button down and hang the phone up, and the load from the box
keeps the phone off-hook. When you pick another phone up, the additional
load drops the line voltage, and the SCR inside the hold box opens up and
removes the load.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."


Posted by Tom Horne on January 12, 2008, 10:27 am
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Steven Lichter wrote:
> I was digging through a box thAt had old telephone stuff and found a
> Model 200 Universal Hold device made by a company called GTI. It looks
> like it plugs into an A/C outlet then a phone jack. I seem to remember
> that it would allow you to put a phone on hold and then pick another one
> up. Anyone know anything about this.


I used to have one and it worked quite well.
--
Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous
for general use." Thomas Alva Edison


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other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

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