Cord PBX shown in new TV show [telecom]

Cord PBX shown in new TV show [telecom]
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Cord PBX shown in new TV show [telecom] hancock4 06-19-2008
Posted by on June 19, 2008, 9:58 pm
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The new ABC-Family cable show "The Middleman" had a very quick glimpse
of a 555 cord PBX switchboard, used when the office assistant had to
make a phone call. The assistant also used the classic 1960s style
operator's headset*. (52 series?)

The paused image was fuzzy on my VCR, but it looked like the board was
beat-up with missing jack lamps.

The show, a comedy, is a spoof on comic superheros fighting evil.
It's strange, but enjoyable. Fast paced. It runs multiple times a
week (check local listings).


*Not only did telephone operators wear them, but they were also
commonly seen in NASA's Houston control center and on TV cameramen.
In the mid-1970s new models came out, with a thin tube replacing the
bubble transmitter end and an earpiece replacing the receiver end.
(Operators told me they didn't like the internal earpiece).

For my cellphone, I bought a Panasonic generic headset for $15 at an
big box office supply store and it works fine. I don't mind the
cord. It supposedly will work in cordless landline phones, too. I
note this since the cellphone stores had fancy headsets for much more
money. Also, a friend who has an at&t cellphone says only special
headsets will work for their models. I'm not interested in
"Bluetooth" units that clip to the ear (where is the transmitter in
those things?)

As an aside, some singers wear headsets while performing and dancing.
I think that's ugly. When they turn around you can see the
transceiver mounted on the back of their outfit. I presume the
transmitter on those units is of much higher fidelity than a telephone
grade transmitter.


Pure Networks
Posted by Dave Garland on June 20, 2008, 6:53 am
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It was a dark and stormy night when hancock4@bbs.cpcn.com wrote:

>As an aside, some singers wear headsets while performing and dancing.
>I think that's ugly. When they turn around you can see the
>transceiver mounted on the back of their outfit. I presume the
>transmitter on those units is of much higher fidelity than a telephone
>grade transmitter.

It is. These days there's no reason why electret microphones (which are
tiny) can't be used, and those can be very good. Singers like the
headset mikes because they let them move around without being tethered
to a mike (if you don't keep your mouth at exactly the same distance
from the mike, which needs to be pretty close to exclude outside noise,
the level keeps changing).

I think most telephones these days use electret transmitters too. Of
course, the fidelity is limited by the audio bandwidth available from
the telco. The transmitter is usually capable of far better.

Dave


Posted by T on June 20, 2008, 7:46 pm
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dave.garland@wizinfo.com says...
> It was a dark and stormy night when hancock4@bbs.cpcn.com wrote:
>
> >As an aside, some singers wear headsets while performing and dancing.
> >I think that's ugly. When they turn around you can see the
> >transceiver mounted on the back of their outfit. I presume the
> >transmitter on those units is of much higher fidelity than a telephone
> >grade transmitter.
>
> It is. These days there's no reason why electret microphones (which are
> tiny) can't be used, and those can be very good. Singers like the
> headset mikes because they let them move around without being tethered
> to a mike (if you don't keep your mouth at exactly the same distance
> from the mike, which needs to be pretty close to exclude outside noise,
> the level keeps changing).
>
> I think most telephones these days use electret transmitters too. Of
> course, the fidelity is limited by the audio bandwidth available from
> the telco. The transmitter is usually capable of far better.

Yes in fact my DECT cordless has very sensitive microphones. So much so
that the speakerphone functionality actually works very well.


Posted by Steve Kostecke on June 20, 2008, 7:50 pm
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> For my cellphone, I bought a Panasonic generic headset for $15 at an
> big box office supply store and it works fine. I don't mind the
> cord. It supposedly will work in cordless landline phones, too. I
> note this since the cellphone stores had fancy headsets for much more
> money. Also, a friend who has an at&t cellphone says only special
> headsets will work for their models. I'm not interested in
> "Bluetooth" units that clip to the ear (where is the transmitter in
> those things?)

Both the cell-phone and the ear-piece contain bluetooth transceivers.

--


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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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