osmo-msc

History

Daniel Willmann 746c7896cb gprs_gmm: Fix bit mask when determining update/attach type Bit 4 is reserved in 3GPP TS 04.08 so exclude it from the type. In 3GPP TS 24.008 it indicates if a follow-on request is pending by the MS, but only in Iu mode. According to the spec it is not required to react to that request with a follow-on proceed so this field can be ignored for now. See 3GPP TS 24.008 Ch. 4.4: "Unless it has specific permission from the network (follow-on proceed) the mobile station side should await the release of the RR connection used for a MM specific procedure before a new MM specific procedure or MM connection establishment is started." as well as Ch. 4.4.4.6: "If the network wishes to prolong the RR connection to allow the mobile station to initiate MM connection establishment (for example if the mobile station has indicated in the LOCATION UPDATING REQUEST that it has a follow-on request pending) the network shall send "follow on proceed" in the LOCATION UPDATING ACCEPT and start timer T3255." Change-Id: If1dff960c406060e257dafc54132687ffc42ad8f		2016-08-27 13:29:33 +02:00
..
contrib	Add web proxy for control interface	2016-08-11 06:05:39 +00:00
doc	add example config for sysmobts	2016-08-08 11:29:49 +00:00
include	add libiu	2016-08-27 13:29:30 +02:00
src	gprs_gmm: Fix bit mask when determining update/attach type	2016-08-27 13:29:33 +02:00
tests	Adding LLC-XID related modifications in LLC	2016-08-27 04:45:55 +00:00
tools	…
.gitignore	Adding LLC-XID encoder / decoder and unit test	2016-08-27 04:45:54 +00:00
AUTHORS	AUTHORS: Add Jacob and Neels	2015-12-05 23:04:11 +01:00
COPYING	License change: We are now AGPLv3+ instead of GPLv2+	2011-01-01 15:39:34 +01:00
Makefile.am	Fix "make distcheck"	2015-06-19 20:57:48 +02:00
README	openbsc/README: some fixes, add CSCN and Iu*	2016-01-28 13:36:07 +01:00
README.vty-tests	Add README.vty-tests	2016-01-28 13:36:07 +01:00
configure.ac	add libiu	2016-08-27 13:29:30 +02:00
git-version-gen	…
openbsc.pc.in	…
osmoappdesc.py	gtphub: Fix the VTY prompt to make the tests move forward	2015-12-14 15:24:50 +01:00

README

About OpenBSC
=============

OpenBSC started as a minimalistic all-in-one implementation of the GSM Network,
with particular emphasis on the functionality typically provided by the BSC,
MSC, HLR, VLR and SMSC.  Today it is a growing suite of libraries and programs,
implementing protocol stacks and functional elements, including

 * OsmoBSC - a pure GSM BSC, speaking Abis/IP to the BTS and A/IP to the MSC
 * OsmoBSC-MGCP - MGCP helper to the OsmoBSC software
 * OsmoNITB - a BSC+MSC+VLR+HLR+SMSC "Network in the box".
 * OsmoCSCN - a voice CN with A/IP and IuCS/IP towards the BSC and/or HNB-GW
 * OsmoSGSN - a GPRS SGSN with Gb/IP and IuPS/IP towards the PCU and/or HNB-GW
 * Osmo-GbProxy - a Proxy to aggregate many Gb links as one Gb link to the SGSN
 * OsmoBSCNAT - a gateway aggregating many A links as one A link to the MSC
 * OsmoGTPHUB - a hub aggregating many GTP links (between SGSN and GGSN)
 * ipaccess-utils - some tools to discover + configure ip.access nanoBTS
 * bs11_config - a tool to configure the Siemens BS-11 microBTS

Various interfaces towards the BTS are supported, among which are:

 * Classic A-bis over E1 using a mISDN based E1 interface. In other
   words, you can connect existing GSM Base Transceiver Station (BTS)
   through E1 to OpenBSC.  So far, we have made it work with the Siemens BS-11,
   various Ericsson RBS2xxx BTS models and the Nokia MetroSite.

 * A-bis over IP as used by the ip.access nanoBTS product family as well as
   the Open Source OsmoBTS software (by the same authors as OpenBSC).  OsmoBTS
   in turn supports various transceiver hardware, including the sysmoBTS
   product family, as well as SDR transceivers supported by OsmoTRX, such as
   the UmTRX or USRP boardss.

 * IuCS and IuPS over IP towards an HNB-GW (see osmo-iuh) for UMTS (3G)
   voice and data links.

Find OpenBSC online at
http://openbsc.osmocom.org/

	Harald Welte <laforge@gnumonks.org>