Osmocom Mobile Switching Centre
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
Vadim Yanitskiy aefbf7a829 Do not mention deprecated -l / --database options 9 months ago
contrib contrib/osmo-msc.spec.in: require libosmo-ranap >= 0.7.0 11 months ago
debian Bump version: 1.6.1.98-cad22-dirty → 1.7.0 1 year ago
doc Do not mention deprecated -l / --database options 9 months ago
include Validate the choosen UTRAN encryption algorithm 9 months ago
m4 move openbsc/* to repos root 5 years ago
src Do not mention deprecated -l / --database options 9 months ago
tests Validate the choosen UTRAN encryption algorithm 9 months ago
.gitignore .gitignore: Ignore new autofoo tmp files 2 years ago
.gitreview update .gitreview to new repo url 5 years ago
.mailmap add .mailmap file for mapping git author name/mail in shortlog 6 years ago
AUTHORS move openbsc/* to repos root 5 years ago
COPYING move openbsc/* to repos root 5 years ago
Makefile.am manuals: generate vty reference xml at build time 2 years ago
README README update. Explain more what it is than just the history 2 years ago
README.vty-tests Remove obsolete ./configure option 5 years ago
TODO-RELEASE support A5/4 in inter-BSC handover 1 year ago
configure.ac Revert "Turn some compiler warnings into errors" 9 months ago
git-version-gen git-version-gen: Don't check for .git directory 4 years ago
osmoappdesc.py osmoappdesc.py, tests: switch to python 3 3 years ago

README

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

OsmoMSC is an implementation of the 3GPP MSC (Mobile Switching Centre)
network element. It implements the following core functionality within
the 2G (GSM) and 3G (UMTS) networks:

* mobility management
* call control (either via built-in MNCC handler or external osmo-sip-connector)
* USSD (exposed via GSUP)
* SMS (either via built-in SMSC or external via GSUP)

Historically, 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