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Osmocom's Base Station Controller for 2G mobile networks https://osmocom.org/projects/osmobsc
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C 97.2%
Python 1.4%
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Neels Hofmeyr 7111e00ee5 do not BSSMAP Clear on lchan rel when LCS is still ongoing 
The proper way to fix this is having a use count on the SCCP conn, one
each for a busy lchan and a busy Location Request. That would require a
bunch more work and testing.

This patch is the least-effort way to avoid the following scenario:

Emergency call is started;
Location Request is started to locate the emergency;
lchan releases early for any reason;
Perfectly fine Location Request gets canceled by Clear Request;
The information was there, but we did not forward the location;
No help at emergency because of my code.

Allow Location Request to complete for these cases:
- rx RLL REL IND (or any other reason for gscon_lchan_releasing())
- rx RSL CONN FAIL

Related: SYS#5912
Related: Idea690a4aa4aecbe4642a16e96d086cc0538564a (osmo-ttcn3-hacks)
Change-Id: Ib44dd05b0adee84234f671313b156ff6625357cc
 		2022-05-15 08:09:34 +00:00
contrib abis_nm: add bts model features to reported ones 2022-05-02 15:14:05 +02:00
debian Bump version: 1.7.0.359-d13ef-dirty → 1.8.0 2021-11-16 17:21:59 +01:00
doc Check VTY config against features reported by BTS 2022-05-02 15:21:28 +02:00
include paging: start/stop credit_timer based on C0 running 2022-05-13 14:06:37 +02:00
m4 Drop unneeded ax_check_compile_flag.m4 2022-01-11 18:15:20 +01:00
src do not BSSMAP Clear on lchan rel when LCS is still ongoing 2022-05-15 08:09:34 +00:00
tests paging: start/stop credit_timer based on C0 running 2022-05-13 14:06:37 +02:00
.gitignore .gitignore: remove non-existing ipaccess-firmware binary 2021-11-05 00:11:33 +03:00
.gitreview .gitreview: update repo url to new location 2017-08-08 17:24:04 +02:00
.mailmap add .mailmap file for mapping git author name/mail in shortlog 2016-08-08 17:40:28 +00:00
AUTHORS move openbsc/* to repos root 2017-08-27 03:52:43 +02:00
COPYING move openbsc/* to repos root 2017-08-27 03:52:43 +02:00
Makefile.am manuals: generate vty reference xml at build time 2020-06-16 10:16:30 +00:00
README rewrite README 2017-09-06 16:25:09 +02:00
README.vty-tests Remove obsolete ./configure option 2018-01-02 12:53:11 +01:00
TODO-RELEASE bts: Add explicit switch case for Cell Id SAI 2022-02-16 18:55:21 +01:00
configure.ac tests: Introduce paging_test 2022-05-03 11:03:00 +02:00
git-version-gen git-version-gen: Don't check for .git directory 2018-07-24 18:04:51 +02:00
osmoappdesc.py debian, osmoappdesc.py, tests: switch to python 3 2019-12-11 09:31:40 +01:00

README 

About OsmoBSC
=============

OsmoBSC originated from the OpenBSC project, which started as a minimalistic
all-in-one implementation of the GSM Network. In 2017, OpenBSC had reached
maturity and diversity (including M3UA SIGTRAN and 3G support in the form of
IuCS and IuPS interfaces) that naturally lead to a separation of the all-in-one
approach to fully independent separate programs as in typical GSM networks.

OsmoBSC was one of the parts split off from the old openbsc.git. Before, it
worked as a standalone osmo-bsc binary as well as a combination of libbsc and
libmsc, i.e. the old OsmoNITB. Since the standalone OsmoMSC with a true A
interface (and IuCS for 3G support) is available, OsmoBSC exists only as a
separate standalone entity.

OsmoBSC exposes
- A over IP towards an MSC (e.g. OsmoMSC);
- Abis interfaces towards various kinds of BTS;
- The Osmocom typical telnet VTY and CTRL interfaces.

Find OsmoBSC issue tracker and wiki online at
https://osmocom.org/projects/osmobsc
https://osmocom.org/projects/osmobsc/wiki

OsmoBSC-NAT is a specialized solution to navigating RTP streams through a NAT.
(Todo: describe in more detail)