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Holger Hans Peter Freyther c8a6c13e4e mncc: Implement the direct RTP mode for ip based systems 
For the LCR rtp-bridge audio should directly flow to the
remote system. In contrast to the original patch audio
will now flow directly from the BTS to the remote system.
This assumes that BTS and the remote system are in the
same network segment and can directly communicate.

There are various limitations in the first iteration of
the implementation:

We could (and in the future) should delay the assignment
but currently we are forced to pick the channel and move
it to the audio state. In case we are located on a SDCCH
we always need to change but if we are on a TCH we could
send the ipa.CRCX and change the audio state a lot later.
The net effect is that the audio codec selection needs to
be done in the NITB code and not in the system connected
to it.

This only works with ip based systems. For E1 systems one
could still use the RTP socket or even try to move this
out of the process.

There is no code for handover handling and it relies on
the remote system dealing with the SSRC change of the
system.
 		2015-09-14 10:12:29 +02:00
..
contrib systemd: use Wants for the dependency btw. osmo-bsc-mgcp and osmo-bsc 2014-11-11 17:59:49 +01:00
doc gsup: Add the HLR-Number as type and use it for UpdateLocation Res 2015-05-24 12:32:22 +08:00
include mncc: Implement the direct RTP mode for ip based systems 2015-09-14 10:12:29 +02:00
src mncc: Implement the direct RTP mode for ip based systems 2015-09-14 10:12:29 +02:00
tests mgcp: Allow to bind to different ports for net/bts ports 2015-08-20 17:24:03 +02:00
tools hlrstat: Print numeric MCC/MNC in case no name is available 2010-01-01 15:08:38 +01:00
.gitignore ignore debian build byproducts 2015-03-28 17:13:57 +01:00
AUTHORS add sylvain and andreas as authors 2010-01-10 18:21:33 +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 update README with URL of the homepage 2010-05-04 08:10:18 +02:00
configure.ac configure: Do not link all applications against libgsm 2015-07-02 09:51:31 +02:00
git-version-gen automatically include program version and print it from vty and --version 2010-03-23 00:09:32 +08:00
openbsc.pc.in Install gsm_04_08.h and required headers into a openbsc/ 2010-02-16 17:51:42 +01:00
osmoappdesc.py hsl: Remove the support for the HSL bts from OpenBSC 2013-07-03 16:19:41 +02:00

README 

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

OpenBSC is a minimalistic implementation of the GSM Network, with
particular emphasis on the functionality typically provided by the BSC,
MSC, HLR, VLR and SMSC.

Its currently supported interfaces towards the BTS 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 only tested the Siemens BS-11
   Test reports with other BTS are much appreciated!

 * A-bis over IP as used by the ip.access nanoBTS product family

You can find the project documentation at http://openbsc.gnumonks.org/

This project is still in its early days, and there are lots of areas where it
doesn't behave as per GSM spec.

	Harald Welte <laforge@gnumonks.org>


libosmocore
===========

Please note that as of March 2010, OpenBSC has a dependency to a library
called "libosmocore".  You can obtain that library from

	git://git.osmocom.org/libosmocore.git