Hello, Harald, thanks for the answer.
first of all, CalypsoBTS is not an active / maintained / stable solution
but more lik an (mindbogglingly amazing!) Hack.
Yes,
I know that CalypsoBTS is not stable solution. But currently I am a
student and I have no so much money to buy anything more powerful.
Furthermore, I am interested in this for research purposes only, not for
creating public land mobile networks.
As you are the first person to report using the code to this list for
quite some time, it would be great if you had some time to re-base, test
and submit it.
As I previously said, I also tested master branches. Here are the results:
*
When I start OsmoBTS I often see this message in OpenBSC log: "Lost
some E1 TEI link: X X" from bsc_init.c. In this case my MS can not
connect to the test network and I have to restart OsmoBTS until this
message will no hide.
*
When the Location Update process I always see this error:
"input/ipaccess.c:277 Bad signalling message,sign_link returned error".
But a phone successfully registers in the network.
* SMS, USSD and Silent SMS works fine.
* When TS1 assigned TCH/H I can call to another ms or LCR. DTMF works.
* When TS1 assigned TCH/F I can use FR codec and call to LCR.
* PDCH does not work on this BTS.
* RRLP works.
* ISMI detach works but as in case of Location Update I see "Bad signalling message..." error.
* It seems, the network works more stable when battery capacity is 100% and backlight is disabled.
If
I understood correctly, osmobts-trx was just moved from obsolete
repository to the master. Now I am reading the source code and trying to fix this bugs.
I have one thing in my mind for a long time. Is it possible to serve a PDCH lchan on TS1 instead of TCH (in case of this "powerful" BTS)? I have tested OsmoSGSN+OpenGGSN with one PDCH channel on TS1, but it did not work.
With best regards,
Яницкий Вадим.