Hello Mychaela, 

Firstly I don't know if the list is still active or not. We are trying again to connect the Siemens BTS to OsmoBSC. I suppose that the protocol that our BTS is speaking is very similar to the BS-11 one so it will be easy to take the code from there and modify it.
What we are trying to do now is to trace the initialization of BTS when is connected the Siemens BSC that we have and try to add the message sequence to the code of OsmoBSC. 
I remember that you are interested in the configuration that we have. 
What do you think about this approach? 

Regards, 
Dan Robu. 

On Thu, Jun 6, 2024, 19:01 Mychaela Falconia <falcon@freecalypso.org> wrote:
Hi Alina,

> First, we are tying to connect our BTS directly to OsmoBSC.
> I'm trying to use configuration for Siemens Bs11,

I recall Dan saying that your Siemens BTS is not BS-11 but some other,
presumably bigger model.  Do you know for certain if it speaks the
same flavor of Abis as BS-11?  Are you (or were you) able to capture
any Abis traces from this BTS working with its native BSC, to see if
the Abis flavor matches expectation?

Also a question for Osmocom community: it is my understanding that
(almost) no one has been playing with BS-11 hardware in a long time.
When was the most recent time that someone tested it and saw that it
still works?  Do we as a community _know_ that Siemens BTS support
still works and hasn't been broken by bitrot?

> but I have problems with channels configuration in DAHDI.
> Do you have any advice for dahdi configuration?

I don't have any experience with DAHDI yet: I expect to have a need to
start playing with DAHDI soon, but I haven't got there yet.  Yesterday
I gave a RetroNetCall presentation on my Nokia TRAU adventures (you
can watch the recording in BigBlueButton), and the current status is:

1) When I get the additional parts for my TRAU that do the actual E1
   interfaces, I will need to connect those E1s to the Digium TE405P
   card I recently bought, and will need to learn DAHDI then.

2) Harald graciously offered to send me a Nokia InSite BTS (small like
   nanoBTS, but E1-based); whenever I receive that BTS and find the
   time to play with it, I will likewise need to learn DAHDI.

Thus I expect to have more DAHDI knowledge in a few months, but I am
not there yet.

M~