Hi Harald, David, Andreas,
On Sun, Oct 11, 2009 at 13:19, Harald Welte laforge@gnumonks.org wrote:
On Sat, Oct 10, 2009 at 09:33:31PM +0400, Alexander Chemeris wrote:
We'll bring one or two our USRPs for OpenBTS testing even if David Burgess won't be able to come, and we would love to be located near OpenBSC guys and you. But that'll be our first time at 26C3 and we're little bit lost - should we send some request to get the space?
I think the process for applying for tablespace in the hackcenter has not yet started.
Meanwhile I've created a http://events.ccc.de/congress/2009/wiki/index.php/GSM wiki page where we can add stuff to, similar to the 25C3 and HAR2009.
Great, thank you. I'll keep my eye on it.
Do you have an option for VoIP link rather then E1?
As indicated, I am really not interested in this. My general interest in any actual voice switching is extremely low. I have two objectives with regard to OpenBSC at the 26C3:
Well, question was addressed to Andreas, I know that you're not interested ;)
- operate a functional network that interconnects with the DECT network of
the POC (due to popular demand)
- do some more experimentation with security related aspects of GSM related
signalling
I don't really see the point of having any kind of additional interfaces for voice data at the 26C3 installation. I don't see a technical challenge there, I think it only increases the network complexity in case something needs to be debugged.
Playing with the asterisk or lcr integration of OpenBSC and hooking it up to some other VoIP-based or -gatewayed system like OpenBTS is something that can be done at any time, at any place, by anyone who is interested in doing that.
Please don't misunderstand me. David knows how friendly I am with regard to OpenBTS, and that there is no sense of "competition" or anything like that. I am very interested in technical discussions of GSM signalling, or at interfacing OpenBSC and OpenBTS on a GSM signalling level.
But simply passing around transcoded voice samples in a VoIP protocol between two autonomous GSM networks is about the most boring thing I can imagine. VoIP protocols are well understood, there are dozens of open source projecst in that area, each with their own community. I happily let somebody else do that.
So if Andreas and you decide you want to hook up OpenBTS and OpenBSC over VoIP, please go ahead and do so. But this is unrelated to the 26C3 GSM network and I expect you will interfere neither with the 26C3 GSM network, nor with the public networks.
I know that you're very much of a friend to OpenBTS rather then a competitor, and if you understood me that way, I ask for excuse.
What I'm trying to achieve is to get the most from the event as I can for OpenBTS. As a first time attendee I may not get a lot of things before hand, but I definitely have no intention to break your agenda. I just think that being connected to the DECT network will give us broader testing then being self-encapsulated. And I see the worth of having integrated HLR and operating a single network rather then two separate networks. But if will render impossible, we'll be happy to be a closed unconnected network or VoIP connected one (which is already more fun for testers).
PS And yes, we plan for registered-users-only network.