Simon,
Yes. Almost. Essentially they use the Universal Software Radio (GNU)
code, to create the radio side of the GSM interface. They then have a
piece of software (OpenBTS) that decodes the radio traffic from the
phone. A normal BTS sends data you are most interested in
(registration requests, SMS, phone calls) on to the MSC via a BSC. Not
so with OpenBTS, which drops them onto Asterisk (for registration and
phone calls), and a jabber server for SMS (planned). All in IP world
of course. A nice thing about this is that the protocols (hence
software) on the IP side are much much simpler than in the SS7 world,
because of the Internet culture of keeping stuff simple.
Oh, and they do not implement any ciphering on the traffic because
that's covered by patents and such.
On Aug 25, 2009, at 09:31, Simon Vass wrote:
Look cool, I also noticed this. Do you need GSM Base H/W? and if so
how much does it cost?
Can a Ubiquity radio chucking out 900Mhz work?
Simon Vass
Technical Manager
E-Tech Uganda Ltd
http://www.etech.ug
Tel: +256 (0) 312260620 or (0) 312260621
Email: [email protected]
----- Original Message -----
From: "Mark Tinka" <[email protected]>
To: [email protected]
Sent: Tuesday, 25 August, 2009 09:27:01 GMT +03:00 Iraq
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing
regions! Looking for a trial
On Tuesday 25 August 2009 02:07:54 pm Gerald Begumisa wrote:
I didn't
quite look into the details but that sounded rather
steep.
To say the least... :-).
Mark.
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