Re: [Asterisk-Users] PBX (Asterisk) <-> Cellular Phone Network

[John Todd]

At 1:20 PM +0000 11/18/03, Linus Surguy wrote:
 > I voulenteer with a local Search And Rescue unit and I was speaking with
the
 > senior members about how they interface the command trailer PBX with the
PSTN
 > or cellular networks when they are on scene at a remote location.  Turns
out
 > they don't.  Thus that got me to thinking about how one would get
Asterisk to
 > interface with a cell phone directly, or what hardware out there works
well
 > for the task.  I have managed to figure out how to make my Motorola
StarTAC
 > make outgoing voice calls for instance and making an interface for this
phone
 > should be quite possible, but it would be nice to have incoming phone
calls
 > too.  I know there are many companies out there which make such producs,
and
 > that a Google search can yield many results, I want thoughts and
opinions,
 > stuff which Google suks at.

 Some of the older cell phones use to expose either a 2-wire or 4-wire
 interface via a connector on the phone (don't know about transmission
I won't bother with any of that - purchase a Nokia Premicell (or other
manufacturers similar item). This device takes a normal GSM SIM card and
then presents a normal PSTN line interface - plug that into your normal
Asterisk PSTN line card - job done.
Linus
I don't have time to go digging for the link, but there is at least 
one vendor who offers a hardware solution with 24 DS0 GSM cards in a 
channel bank, which you'd then connect to a T100P card.  In other 
words, it's 24 lines of cell phones in a 2u package, with minimal 
wiring hassle.  Google should show you the way...

JT
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