Cell Phones?

[Pat Kohli]

Does anyone have any experience with embedded cell phones for digitial
communications? This would be something like a combination modem and
internal cell phone, antennas and/or antenna wires could extrude.

Does anyone know of any? Any in cPCI architecture, 3u form factor?

If you've worked with them, do you have any recommendations, tips,
lessons learned?

Tia!
- Pat
ko...@ameritel.net

[Andrew Shiner]

I think you might be looking for something like this:
http://www.rim.net/products/oem/index.shtml

These things have made there way into a variety of commercial application in
recent years.

Take care,

Andrew Shiner
Engineering Physics (III)
McMaster University

"Pat Kohli" <kohliCUT...@ameritel.net> wrote in message
news:3CABDFC9...@ameritel.net...

[Grant Edwards]

In article <3CABDFC9...@ameritel.net>, Pat Kohli wrote:

> Does anyone have any experience with embedded cell phones for digitial
> communications? This would be something like a combination modem and
> internal cell phone, antennas and/or antenna wires could extrude.
>
> Does anyone know of any? Any in cPCI architecture, 3u form factor?

I worked with one (dual PCMCIA card) that consisted of a cell
phone and a modem. You had to subscribe to a special service
from AT&T (they acted as ISP). It worked tolerably well --
sort of slow. Only a few cities had coverage, so we abandonded
it and stuck with land-line.

It was an 800MHz AMPS service with some sort of proprietary
modem.

> If you've worked with them, do you have any recommendations, tips,
> lessons learned?

You'd think that digital phones (particularly GSM) could
provide digital data transport, but none of the GSM providers
in the states seemed to have a clue handy.

--
Grant Edwards grante Yow! All right, you
at degenerates! I want this
visi.com place evacuated in 20
seconds!

[Thad Smith]

Pat Kohli wrote:

> Does anyone have any experience with embedded cell phones for digitial
> communications? This would be something like a combination modem and
> internal cell phone, antennas and/or antenna wires could extrude.
>
> Does anyone know of any? Any in cPCI architecture, 3u form factor?

BlueTree makes the BlueBird cell phone modem, which attaches to an
external industrial Motorola analog cell phone modem. It runs at 14.4
kbps and supports MNP-10EC protocol for better cell phone operation.
You can mount an external antenna elsewhere and attach via cable. They
run off 12 volts. We use a standard 9-pin serial connector. We have
used it, but have had comm problems in some areas.

Thad

[Pat Kohli]

Thad Smith wrote:

Thanks Thad, Grant, and Andrew. It looks like no one has these in IPs. It
is probably timing. The folks at RIM, Andrew's link, offer a "credit card"
sized card, with a serial interface. It has a radio and a modem, with an
RS-232 interface. The customer gets a cell phone service agreement.

I am confused by your statement, Thad, that the BlueBird cell phone modem
attaches to an external Motorola analog cell phone modem. Does the Bluebird
depend on the Motorola to operate, as if the BlueBird is essentially an
interface to the external Motorola cell phone, or is this an optional
feature that extends bandwidth, or something like that? I've misunderstood
this.

v/r
Pat
ko...@ameritel.net

[Lewin A.R.W. Edwards (Despammed)]

> Does anyone have any experience with embedded cell phones for digitial
> communications? This would be something like a combination modem and

We're about to start using combo GSM/GPRS modules from these people:

http://www.wavecom.com/home/index.php

RS232 interface, not PCI.

--
=== Lewin A.R.W. Edwards
Personal Site : http://www.larwe.com/
Official Site: http://www.zws.com/