Osmocom's Base Station Controller for 2G mobile networks
https://osmocom.org/projects/osmobsc
Philipp Maier
844876f8d5
At the moment there are three sources that may advertise a list of supported audio codec/rate settings. There is the MS that advertises advertises a speech codec list and the MSC that sends a channel type information element over A and there are also settings in the bsc configuration file that may restrict the codec/rate types that are allowed to use. The function match_codec_pref() looks at all of the three buckets and selects a codec that satisfies all three. This is already a somewhat complicated process, overit is very isolated, so lets give it its own c-file. Due to the lack of unit-tests it is very hard to make changes here so lets add also unit-test to make sure that regressions are catched early. - Put match_codec_pref() and all its helper functions into a separate c-file. - Add a unit test. Change-Id: Iabedfdcec8b99a319f2d57cbea45c5e36c7b6e29 Related: OS#3361 |
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| configure.ac | ||
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| osmoappdesc.py | ||
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)