osmo-msc

Osmocom Mobile Switching Centre

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Vadim Yanitskiy 64623e1848 libmsc/gsm_09_11.c: implement guard timer for NCSS sessions It may happen that either the MS or an EUSE would become unresponsive during a call independent SS session, e.g. due to a bug, or a dropped message. In such cases, the corresponding transaction would remain unfreed forever. This change introduces a guard timer, that prevents keeping 'stalled' NCSS sessions forever. As soon as it expires, both sides (i.e. MS and EUSE) are getting notified, and the transaction is being released. By default, the timer expires after 30 seconds. As soon as either the MS, or an EUSE initiates any activity, the watchdog timer is rescheduled. The timeout value can be configured from the VTY: msc ... ! Use 0 to disable this timer ncss guard-timeout 30 Please note that changing the timeout value at run-time doesn't affect the existing NCSS sessions, excepting the case when the timer is disabled at run-time. This change makes TC_lu_and_ss_session_timeout pass. Change-Id: Icf4d87c45e90324764073e8230e0fb9cb96dd9cb Related Change-Id: (TTCN) I3e1791773d56617172ae27a46889a1ae4d400e2f Related: OS#3655		2019-02-20 03:22:38 +07:00
contrib	contrib: fix makedistcheck with disabled systemd	2018-12-06 16:31:01 +00:00
debian	debian: depend on libsctp-dev	2019-02-06 17:56:01 +00:00
doc	build manuals moved here from osmo-gsm-manuals.git	2018-11-27 17:50:54 +01:00
include	libmsc/gsm_09_11.c: implement guard timer for NCSS sessions	2019-02-20 03:22:38 +07:00
m4	move openbsc/* to repos root	2017-07-12 23:17:10 +00:00
src	libmsc/gsm_09_11.c: implement guard timer for NCSS sessions	2019-02-20 03:22:38 +07:00
tests	libmsc/gsm_09_11.c: implement guard timer for NCSS sessions	2019-02-20 03:22:38 +07:00
.gitignore	build manuals moved here from osmo-gsm-manuals.git	2018-11-27 17:50:54 +01:00
.gitreview	update .gitreview to new repo url	2017-08-08 17:26:28 +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	2017-07-12 23:17:10 +00:00
COPYING	move openbsc/* to repos root	2017-07-12 23:17:10 +00:00
Makefile.am	Fix DISTCHECK_CONFIGURE_FLAGS override	2018-12-04 15:37:37 +01:00
README	rewrite README	2017-09-06 16:33:41 +02:00
README.vty-tests	Remove obsolete ./configure option	2017-11-29 14:24:54 +00:00
configure.ac	configure.ac: Check for libsctp	2019-02-06 18:08:59 +00:00
git-version-gen	git-version-gen: Don't check for .git directory	2018-07-24 18:05:46 +02:00
osmoappdesc.py	doc/examples: add detailed cs7 config examples	2017-09-07 03:10:36 +02:00

README

About OsmoMSC
=============

OsmoMSC 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.

OsmoMSC was one of the parts split off from the old openbsc.git. Before, it was
the libmsc part of the old OsmoNITB. Since a true A interface and IuCS for 3G
support is available, OsmoMSC exists only as a separate standalone entity.

OsmoMSC exposes
- GSUP towards OsmoHLR (or a MAP proxy);
- A over IP towards a BSC (e.g. OsmoBSC);
- IuCS towards an RNC or HNB-GW (e.g. OsmoHNBGW) for 3G voice;
- MNCC (Mobile Network Call Control derived from GSM TS 04.07);
- SMPP 3.4 (Short Message Peer-to-Peer);
- The Osmocom typical telnet VTY and CTRL interfaces.

Find OsmoMSC issue tracker and wiki online at
https://osmocom.org/projects/osmomsc
https://osmocom.org/projects/osmomsc/wiki