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'[OT] Cellular Telephone Adapter for Standard Phone'
2005\12\02@092339 by Tim N9PUZ

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A few days each month we setup shop in a building that has no regular
phone service. Operations there are somewhat noisy so hearing a cell
phone ring is nearly impossible.

I'd like to find some sort of a cell phone module that would let me
plug in a regular desk phone with an external ringer bell or flashing
light. Alternately something that would attach to a regular cell phone
and provide a loud ringer or light would probably work. We're in the
US so compatibility with that cell phone system is needed.

My web searches have turned up modules used for building M2M solutions
but nothing for just regular voice.

Tim

2005\12\02@094617 by Alan B. Pearce

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>I'd like to find some sort of a cell phone module
>that would let me plug in a regular desk phone with
>an external ringer bell or flashing light.
>Alternately something that would attach to a
>regular cell phone and provide a loud ringer or light
>would probably work. We're in the US so compatibility
>with that cell phone system is needed.

I would suggest finding one of modules that people used to have that would
tell them when the cell was about to ring. They work by detecting the RF
burst from the cell as the base exchanges with it. Trouble was they gave
more false alarms because they also detect all the "where are you" exchanges
that happen every few minutes, which means lots of false alarms.

The other option would be an ear piece. I don't know if these repeat the
ring for you.

2005\12\02@094742 by Mike Hord

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Is there a PA or loudspeaker of some sort?  Or do
your coworkers listen to a stereo at adolescent
volumes while working?

Have you considered a suction cup microphone of
the sort that is usually used to listen in on phone
conversations?  Stick it to the ringer speaker on
the cell, hook it through the PA, and there you
go.

If you REALLY want to make some gizmo to do
it, a VOX-type circuit wouldn't be inappropriate.
That way, loud environmental noises wouldn't
set it off, as the ringer would always be louder.

For myself, I just turn on vibrate, put it in the
holster, and tuck it INSIDE my belt and pants
against my hipbone.  VERY hard to miss.

Mike H.

2005\12\02@101117 by Danny Sauer

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Tim wrote regarding '[OT] Cellular Telephone Adapter for Standard Phones' on Fri, Dec 02 at 08:27:
> I'd like to find some sort of a cell phone module that would let me
> plug in a regular desk phone with an external ringer bell or flashing
> light. Alternately something that would attach to a regular cell phone
> and provide a loud ringer or light would probably work. We're in the
> US so compatibility with that cell phone system is needed.

What about that thing Cingular had a while back where you could put
your cell phone on a cradle which would make the phones in your house
ring / let you talk over them?  I have no idea if they still offer
that, bit it might well do what you need.

Or you could just put the phone on vibrate and carry the phone in your
pants pocket.  That's what I've done for years - and I drive a car
whose exhaust is loud enough inside in combination with the stereo
usually being up loud*er* so I can hear the vocals.  The phone ringer
usually ins't heard, but I typically feel a vibration (which is
distinguishable from the vibration the car normally has) every time.
:)

...time passes...

Ok, through a quick web search, I found this:
www.cingular.com/customer_service/fast_forward
which is the Cingular thing, which apparently just forwards calls to
your home phone, and therefore isn't really what you asked for (but
would call forwarding work for you?).
There's also this thing: http://www.phonelabs.com/prd05.asp
I'm not sure if it'll do what you want or not, but it's got
potential...
http://communications.rca.com/en-US/ModelDetail.html?MN=23200RE3

My final suggestion, and probably the most useful, is to find out if
your cell phone can be hooked up to a car stereo's mute circuit.  Lots
of phones have an output which will mute an aftermarket (and some
factory) stereos.  The output is just an on/off kind of thing.  If you
can figure out how to get at that output, it should be pretty trivial
to use a relay or something to kick on a BigArse Bell(TM).  You'd want
to disconnect the output when talking, though, as the mute output
stays active during the conversation as well.

--Danny

2005\12\02@101621 by Tim N9PUZ

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Mike Hord wrote:
> Is there a PA or loudspeaker of some sort?  Or do
> your coworkers listen to a stereo at adolescent
> volumes while working?

No loud music. Just a huge grinding machine that shreds scrap steel
into smaller bits and pieces.

There's not a PA system in the building.

> Have you considered a suction cup microphone of
> the sort that is usually used to listen in on phone
> conversations?  Stick it to the ringer speaker on
> the cell, hook it through the PA, and there you
> go.

That's a possibility. Maybe that in conjunction with one of those
portable PA's like an auctioneer uses.

> For myself, I just turn on vibrate, put it in the
> holster, and tuck it INSIDE my belt and pants
> against my hipbone.  VERY hard to miss.

They do that now. The trouble is the cell phone ends up going home
with someone nearly every day and then the next shift has no phone again.

Thanks for the suggestions.

Tim

2005\12\02@102104 by John Ferrell

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Hearing the wimpy cell phone ring is a major problem with those of us who
have deteriorating hearing.
The major criteria list for my next cell phone includes a ringer I can hear,
and a display I can read in the sunlight. The vibrate feature is not very
useful when riding through the woods in a John Deere Gator or operating a
Backhoe.

John Ferrell
http://DixieNC.US

----- Original Message -----
From: "Tim N9PUZ" <spam_OUTtim.n9puzTakeThisOuTspamgmail.com>
To: "'Microcontroller discussion list - Public.'" <.....piclistKILLspamspam@spam@mit.edu>
Sent: Friday, December 02, 2005 9:24 AM
Subject: [OT] Cellular Telephone Adapter for Standard Phones


>A few days each month we setup shop in a building that has no regular phone
>service. Operations there are somewhat noisy so hearing a cell phone ring
>is nearly impossible.


2005\12\02@140502 by Herbert Graf

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On Fri, 2005-12-02 at 08:24 -0600, Tim N9PUZ wrote:
> A few days each month we setup shop in a building that has no regular
> phone service. Operations there are somewhat noisy so hearing a cell
> phone ring is nearly impossible.
>
> I'd like to find some sort of a cell phone module that would let me
> plug in a regular desk phone with an external ringer bell or flashing
> light. Alternately something that would attach to a regular cell phone
> and provide a loud ringer or light would probably work. We're in the
> US so compatibility with that cell phone system is needed.

Any internet in that building? TTYL

-----------------------------
Herbert's PIC Stuff:
http://repatch.dyndns.org:8383/pic_stuff/

2005\12\02@141659 by Brooke Clarke

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Hi Tim:

What you're looking for is called a CellSocket.  It's an interface that
allows you use your cell phone from a standard touch tone phone.
Typically you might connect the CellSocket to the second line in your
house and use 2-line phones throughout the house.
You can then answer whichever line rings and dial out on whichever line
costs less.

Have Fun,

Brooke Clarke, N6GCE
--

w/Java http://www.PRC68.com
w/o Java www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com


{Quote hidden}

2005\12\02@154728 by Richard Prosser

picon face
Could you get a car kit & modify it?
Some use a data string from the phone to mute the car radio speaker.
This would seem an easy method to trigger an alternative ringer / lamp
etc
RP

On 02/12/05, Herbert Graf <@spam@mailinglist2KILLspamspamfarcite.net> wrote:
{Quote hidden}

2005\12\02@191113 by Juan Cubillo

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Go to
http://www.thinkgeek.com
or
http://www.tkny.com

Search ubnder "phones"

You should find wahat you are looking for...

Juan Cubillo

{Original Message removed}

2005\12\03@041238 by Nate Duehr

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Tim N9PUZ wrote:

> I'd like to find some sort of a cell phone module that would let me plug
> in a regular desk phone with an external ringer bell or flashing light.
> Alternately something that would attach to a regular cell phone and
> provide a loud ringer or light would probably work. We're in the US so
> compatibility with that cell phone system is needed.

This one seems to be compatible with the most cell phones:

http://www.phonelabs.com/prd05.asp

As someone else pointed out, another brand name is CellSocket, and there
are others making them.

Nate

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