Yes, I am pretty sure you are correct now that I think about it. 

I dealt with a lot of stand alone devices that connected to traditional PBXs in war torn West Africa.  It was the only way to have a PBX.

I was there to help rebuild the infrastructure under USAID/UN.

They had a unique situation where there were no copper lines, the locals stole all the copper to make pots, pans, whatever.

So everything was GSM and WiFi. 

Heck they didn't even have an electrical grid, everything was running on gennies.

Liberia, Sierra Leone, and Guinea in 2005.

I want to go back and see how far things have progressed.

On Tue, Nov 30, 2010 at 11:00 AM, David A. Burgess <> wrote:

I think this does the opposite of what OpenBTS does. It looks like is presents 4 subscriber-side air interfaces so that the Asterisk PBX and send and receive calls in the carrier network, or use GSM as a backhaul to the PSTN/PLMN.

On Nov 30, 2010, at 1:22 AM, Steve Totaro wrote:


---------- Forwarded message ----------
From: ATCOM VoIP <>
Date: Tue, Nov 30, 2010 at 3:14 AM
Subject: Asterisk GSM Card

Leading Manufacturer of VoIP hardware
ATCOM release GSM asterisk card 

ATCOM officially releases its new PCI based telephony cards with GSM channels- AX4G which supports up to 4 GSM channels and fully compatible with open source Asterisk systems. With this product, Asterisk users can perfectly integrate their fixed IP telephony system with the mobile nework. The applications could be GSM connectivity for PBX, Mobile PBX, GSM VoIP gateway, SMS gateway and GSM callback service 
For more information, please visit: 

or send email to:

Atcom technology Co.,Ltd   

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David A. Burgess
Kestrel Signal Processing, Inc.