commit | 0cc03ca427e3dcbcfb6ae11d0ae0b9b5725cdd9f | [log] [tgz] |
---|---|---|
author | Neels Hofmeyr <nhofmeyr@sysmocom.de> | Mon Mar 25 06:41:35 2024 +0100 |
committer | Neels Hofmeyr <nhofmeyr@sysmocom.de> | Thu Mar 28 04:06:58 2024 +0100 |
tree | 1bdd5ab7b568119c2d6e9eb25a607789ca7fc895 | |
parent | 2fd69e15d36d5a8e87029741ad66632c57d24cd4 [diff] |
never page for TMSI with 'no assign-tmsi' With 'no assign-tmsi', regard any TMSI as invalidated at the end of a Location Updating procedure. Hence, avoid paging by TMSI. When 'no assign-tmsi' is set, osmo-msc does not actively assign a new TMSI at the end of the Location Updating. However, it stores any TMSI identity that the MS sends in a Location Updating Request. So far, this caused osmo-msc to use the TMSI that the MS had sent in subsequent Paging, which goes unanswered by the MS. (After the long standing evil twin problem regarding TMSI MI has been fixed in recent Ifdabe0b65bffafbf7b8e5cc10e2d225d1ed1cecd, there is no longer an evil twin risked by clearing out a TMSI.) Related: SYS#6860 OS#4721 Change-Id: I583682d1a35a70b008d7bb2d89ba7c3109a60b21
This repository contains a C-language implementation of a GSM Mobile Switching Centre (MSC) for 2G (GSM) and 3G (UMTS). It is part of the Osmocom Open Source Mobile Communications project.
OsmoMSC exposes
OsmoMSC implements
You can find the OsmoMSC home page and wiki online at https://osmocom.org/projects/osmomsc/wiki.
You can clone from the official osmo-msc.git repository using
git clone https://gitea.osmocom.org/cellular-infrastructure/osmo-msc
There is a web interface at https://gitea.osmocom.org/cellular-infrastructure/osmo-msc
User Manuals and VTY reference manuals are [optionally] built in PDF form as part of the build process.
Pre-rendered PDF version of the current "master" can be found at User Manual as well as the VTY Reference Manual
We welcome any osmo-msc related discussions in the Cellular Network Infrastructure -> 2G/3G CN section of the osmocom discourse (web based Forum).
Discussions related to osmo-msc are happening on the openbsc@lists.osmocom.org mailing list, please see https://lists.osmocom.org/mailman/listinfo/openbsc for subscription options and the list archive.
Please observe the Osmocom Mailing List Rules when posting.
We use the issue tracker of the osmo-msc project on osmocom.org for tracking the state of bug reports and feature requests. Feel free to submit any issues you may find, or help us out by resolving existing issues.
Our coding standards are described at https://osmocom.org/projects/cellular-infrastructure/wiki/Coding_standards
We us a gerrit based patch submission/review process for managing contributions. Please see https://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit for more details
The current patch queue for osmo-msc can be seen at https://gerrit.osmocom.org/#/q/project:osmo-msc+status:open
OsmoMSC originated from the OsmoNITB project, which started as a minimalistic all-in-one implementation of the GSM Network. In 2017, OsmoNITB 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.