First Osmocom GMR code release
As some of the readers may already know, a couple of Osmocom developers
have been working on a new sub-project: OsmocomGMR.
The primary goal of this project is to provide a reusable and clean
implementation of the various layers of GMR-1.
What is GMR-1 ? Well, it stands for "GEO Mobile Radio" and it's a set of
specifications describing a satellite based mobile phone network heavily
inspired from GSM. One of the major commercial operators of GMR-1
technology is "Thuraya", providing coverage over
Europe/Africa/Asia/Australia.
So far the implementation focused on the lowest layers:
* Physical layer with FCCH sync and demodulation support for
* pi4-CBPSK and pi4-CQPSK bursts.
* Channel coding layer (scrambling/puncturing/convolutional
coding/crc/interleaving/...)
And some ancillary tools to exploit those:
* A good capture tool to listen to particular ARFCN(s) and
channelize them properly
* Wireshark support (BCCH only so far)
The first 'demo application' using all of the above provides
functionalities similar to what airprobe is for GSM: An air interface
protocol analyzer that goes all the way from capturing data off-the-air
to sending packets to wireshark for analysis. Limited to BCCH only
currently but this will evolve with time.
Development was mainly done by Sylvain Munaut, with help from Dimitri
Stolnikov (early signal captures and his great capture tool), Harald
Welte (initiating the project) and Steve Margraf (testing different
setup and antenna ideas).
If you'd like to know more, you are encourated to read the wiki
(http://gmr.osmocom.org/) and join the mailing list
(http://lists.osmocom.org/mailman/listinfo/gmr)
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
R M <rm.engineer84(a)gmail.com> wrote:
> I am looking for Vitelcom TSM30 source code. I tried searching for it
> in Google. I am not able to find it.
I have already helped the OP out off-list.
In case anyone else is looking for a copy of that code and all known
mirrors have been pulled: I have a copy in my possession, and I've
been meaning to put it up on my FTP server, i.e., a new public mirror
that would be completely shutdown-proof. (I don't use clouds, I run
everything on my own physical HW in my own physical control, housed in
my own personal datacenter on my own soil which I have declared to be
my own nation with my own laws, so no one in the world can make me
take anything down.) However, I am very very technologically-backwards,
and my current server HW/OS platform is too ancient to host a 500 MiB
blob. (The booty is in the form of an ISO image and appears to contain
a huge Windows-based development environment in addition to the actual
source.) For ages I've been meaning to set up an additional FTP
server on newer HW that can host such big stuff, but that progress is
very very slow-going for a bunch of personal reasons.
Because I consider it to be my fault that I still haven't followed
through with my ages-old promise of setting up that new FTP server, I
hereby attempt to make up for it somewhat by making the following
offer: if anyone would like a copy of that TSM30 source code, is not
able to find it anywhere else, and is not willing to wait however many
more months for me to set up that darned server, you can give me your
snail mail address and I'll send you a CD-R recorded from that 500 MiB
ISO image.
With the above out of the way, I happen to have some unanswered
questions about the TSM30 phone itself which I wonder if perhaps
someone in this community might have some answers to, so I've decided
to use this thread (started by someone else to whom I have no relation)
to try asking them. :-) (And yes, I've already tried Googling quite
extensively.) OK, here we go:
1. Would anyone happen to know the basic specs for the TSM30 phone
from an ordinary user's perspective? Which GSM bands does it
support? What kind of features does it offer? Judging from a
cursory bird's-eye-level look at the source code, it seems to be a
few notches above a basic primitive phone like Mot C123, but not
quite a smartphone either. I realize that one can probably extract
all the answers from the source if one were to study it for months
on end (I had no idea it would be this huge!), but I was wondering
if anyone already happened to know the answer.
Basically I'm trying to decide if it would be worth my while to try
to acquire an actual TSM30 hardware unit - which in itself seems to
be very non-trivial.
2. Has anyone been able to find a service manual and/or schematics for
this phone?
3. Does anyone know the hardware in the TSM30 compares against other
Calypso-based phones, such as Mot C123, Openmoko GTA02 or the
Leonardo reference design? What are the similarities and
differences?
TIA a lot for any clues,
MS
Hi,
I am looking for Vitelcom TSM30 source code. I tried searching for it
in Google. I am not able to find it.
The link that is provided in the wiki is dead.
Has any one else found it?
If yes can you please provide me the link also.
Regards
RM
only DSP patch is released which allow you to sniff one time slot out of 7.
rest code is not published and i guess will never be published
On Thu, Oct 6, 2011 at 3:30 PM, <baseband-devel-request(a)lists.osmocom.org>wrote:
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> 1. Sniff code.. as shown in c27 video (Marten Christophe)
>
>
> ---------- Forwarded message ----------
> From: Marten Christophe <technosabby(a)gmail.com>
> To: Sylvain Munaut <246tnt(a)gmail.com>
> Date: Thu, 6 Oct 2011 01:26:59 +0000
> Subject: Sniff code.. as shown in c27 video
>
> Hello Sylvain,
>
> If sniff code has been released as shown in the chao Video conference c27
> .. if any sniff code have been merged to any of Osmocom branch, lately i
> have lost the track of mails and git for quit a some time.
>
> Kind Regards,
>
> _______________________________________________
> baseband-devel mailing list
> baseband-devel(a)lists.osmocom.org
> https://lists.osmocom.org/mailman/listinfo/baseband-devel
>
>
--
Akib Sayyed
Matrix-Shell
akibsayyed(a)gmail.com
akibsayyed(a)matrixshell.com
Mob:- +91-966-514-2243
Hello Sylvain,
If sniff code has been released as shown in the chao Video conference c27 ..
if any sniff code have been merged to any of Osmocom branch, lately i have
lost the track of mails and git for quit a some time.
Kind Regards,
Hi guys..
I have a question about cipher mode.
I saw, that currently a5/1 and a5/2 is implemented.
Now, I want to force the phone to use no encryption (A5/0). Is it
enough to disable both of these algos?
Because when I tried that, I was not longer able to sign in..
Are there any patches that are necessary, or may it be, that the
network is not willing to provide a non-encrypted connection?
Usually, the phone is using A5/1 and with that algo, everything is
working fine..
Thanks for your help.
Ronny
