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Today's Topics:
1. Re: Fwd: Open GSM Base Station for Developing regions!
Looking for a trial (Mark Tinka)
2. Re: Fwd: Open GSM Base Station for Developing regions!
Looking for a trial (Gerald Begumisa)
3. Re: Fwd: Open GSM Base Station for Developing regions!
Looking for a trial (Mark Tinka)
4. Re: Fwd: Open GSM Base Station for Developing regions!
Looking for a trial (Simon Vass)
5. Re: Fwd: Open GSM Base Station for Developing regions!
Looking for a trial (Paul Bagyenda)
6. Re: Fwd: Open GSM Base Station for Developing regions!
Looking for a trial (Gerald Begumisa)
7. Re: Fwd: Open GSM Base Station for Developing regions!
Looking for a trial (Paul Bagyenda)
8. Re: Fwd: Open GSM Base Station for Developing regions!
Looking for a trial (Ernest Byaruhanga)
9. Re: Fwd: Open GSM Base Station for Developing regions!
Looking for a trial (Paul Bagyenda)
----------------------------------------------------------------------
Message: 1
Date: Tue, 25 Aug 2009 12:56:02 +0800
From: Mark Tinka <[email protected]>
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing regions!
Looking for a trial
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-6"
On Tuesday 25 August 2009 12:50:39 pm McTim wrote:
anyone up for this?
Interesting...
Mark.
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Message: 2
Date: Tue, 25 Aug 2009 09:07:54 +0300
From: Gerald Begumisa <[email protected]>
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing regions!
Looking for a trial
To: Linux Users Group Uganda <[email protected]>
Message-ID:
<[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
On Tue, Aug 25, 2009 at 7:50 AM, McTim <[email protected]> wrote:
anyone up for this?
A while ago, I exchanged a couple of emails with one of the authors
of
OpenBTS about a possible trial - he said it would cost $250k for a
local 4-month trial. I didn't quite look into the details but that
sounded rather steep.
Gerald.
------------------------------
Message: 3
Date: Tue, 25 Aug 2009 14:27:01 +0800
From: Mark Tinka <[email protected]>
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing regions!
Looking for a trial
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
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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------------------------------
Message: 4
Date: Tue, 25 Aug 2009 06:31:09 +0000 (UTC)
From: Simon Vass <[email protected]>
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing regions!
Looking for a trial
To: [email protected], Linux Users Group Uganda
<[email protected]>
Message-ID: <23967628.11971251181869856.javamail.r...@mail>
Content-Type: text/plain; charset=utf-8
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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---------------------------------------
------------------------------
Message: 5
Date: Tue, 25 Aug 2009 09:33:52 +0300
From: Paul Bagyenda <[email protected]>
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing regions!
Looking for a trial
To: Linux Users Group Uganda <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
It's much much cheaper than that. Full test kit under $2-3k, last
check. (But please remember to fly under Frequency Police's radar.)
The current release has clock drift issues, which make it hard for
less robust GSM modules (strangely, those found in higher-end phones)
to latch onto the BTS. This has recently been solved. Oh and there
was an injunction against their work. That's been lifted.
Exciting, even in these early stages. Once one guy has walked the
hot coals, it all seems very simple. People start (rightly) asking
why no one had done this before!
P.
On Aug 25, 2009, at 09:07, Gerald Begumisa wrote:
On Tue, Aug 25, 2009 at 7:50 AM, McTim <[email protected]> wrote:
anyone up for this?
A while ago, I exchanged a couple of emails with one of the
authors of
OpenBTS about a possible trial - he said it would cost $250k for a
local 4-month trial. I didn't quite look into the details but that
sounded rather steep.
Gerald.
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for them in any way.
---------------------------------------
------------------------------
Message: 6
Date: Tue, 25 Aug 2009 09:43:18 +0300
From: Gerald Begumisa <[email protected]>
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing regions!
Looking for a trial
To: Linux Users Group Uganda <[email protected]>
Message-ID:
<[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
On Tue, Aug 25, 2009 at 9:33 AM, Paul
Bagyenda<[email protected]> wrote:
[...] Oh and there was an injunction against their
work. That's been lifted.
This is very nice to know. I haven't followed the project for a
while. I notice the injunction was lifted this month. More
information on http://openbts.sourceforge.net/
Very interesting essays on http://openbts.blogspot.com/
Gerald.
------------------------------
Message: 7
Date: Tue, 25 Aug 2009 09:45:19 +0300
From: Paul Bagyenda <[email protected]>
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing regions!
Looking for a trial
To: Linux Users Group Uganda <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
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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%LUG is generously hosted by INFOCOM http://www.infocom.co.ug/
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---------------------------------------
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---------------------------------------
------------------------------
Message: 8
Date: Tue, 25 Aug 2009 15:05:39 +0800
From: Ernest Byaruhanga <[email protected]>
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing regions!
Looking for a trial
To: Linux Users Group Uganda <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
Paul Bagyenda wrote thus on 8/25/09 2:45 PM:
...
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.
btw,
asterisk supports SS7, and there's already an open source SS7
implementation.
(http://www.openss7.org/)
eb
------------------------------
Message: 9
Date: Tue, 25 Aug 2009 10:32:04 +0300
From: Paul Bagyenda <[email protected]>
Subject: Re: [LUG] Fwd: Open GSM Base Station for Developing regions!
Looking for a trial
To: Linux Users Group Uganda <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
Asterisk supports SS7 ISUP, which is what is used between switches to
exchange calls. What the phone uses to speak to the BTS (and then on
to the MSC) is an entirely different protocol (similar to ISUP
though). Ditto for SMS, USSD. Then there's the whole "mobility
management" (MAP, BSSMAP and so forth), which Asterisk doesn't do.
Openss7: Over-engineered piece of ... Time for me to start chanting
calming words! Tried it. Doesn't live up to the promise. Not by a
long shot. The author got it into his head to implement a STREAMS-
based stack. Which would have been good if it a) worked and b) was
not
over-engineered as to require far too much exertion on the part of
its
user. And for the important GSM stuff there is simply too much
missing for it to have any value.
As an aside, Asterisk is generally considered a hack. It is not very
well engineered from a software point of view. But it works. And
works
simply. And is easy to extend. Which is very very important.
P.
On Aug 25, 2009, at 10:05, Ernest Byaruhanga wrote:
Paul Bagyenda wrote thus on 8/25/09 2:45 PM:
...
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.
btw,
asterisk supports SS7, and there's already an open source SS7
implementation.
(http://www.openss7.org/)
eb
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------------------------------
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End of LUG Digest, Vol 60, Issue 38
***********************************
