osmo-msc/openbsc
Sylvain Munaut 4010f1e6f4 bts: Allow config of RACH control parameters tx-integer & max retrans
Tweaking theses can be useful especially tx-integer that influence
both the spread of rach attemps and the delay between two attemps.

Looking up GSM 04.08 3.3.1.1.2 & 10.5.2.29 can help determine good
values. The default are choosed with a wide spacing between attemps
(tx integer = 9 -> T=12 & S=217 (non-combined CCCH/SDCCH) or 115 (for
combined CCCH/SDCCH)). This alleviates the problem of responding to
several RACH attempts by a same MS, allocating several RF channels when
only 1 is needed.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
2009-12-22 13:43:26 +01:00
..
contrib [contrib] Add a utility to convert an IE page to an enum 2009-11-20 17:29:33 +01:00
doc [handover] Implement 04.08 HANDOVER COMMAND 2009-11-29 20:02:53 +01:00
include bts: Allow config of RACH control parameters tx-integer & max retrans 2009-12-22 13:43:26 +01:00
src bts: Allow config of RACH control parameters tx-integer & max retrans 2009-12-22 13:43:26 +01:00
tests [sms] Fix compile warning by including gsm_data.h 2009-11-22 18:01:42 +01:00
tools move openbsc into its own subdirectory 2009-06-10 05:40:52 +08:00
.gitignore [misc] Create a gitignore to ignore files 2009-08-20 13:56:45 +02:00
AUTHORS move openbsc into its own subdirectory 2009-06-10 05:40:52 +08:00
COPYING move openbsc into its own subdirectory 2009-06-10 05:40:52 +08:00
Makefile.am move openbsc into its own subdirectory 2009-06-10 05:40:52 +08:00
README move openbsc into its own subdirectory 2009-06-10 05:40:52 +08:00
configure.in [sccp] Implement parts of ITU SCCP for use in the A-Interface 2009-11-20 13:09:15 +01:00
openbsc.pc.in move openbsc into its own subdirectory 2009-06-10 05:40:52 +08:00

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.

Its only current interface is a mISDN based E1 interface utilizing the A-bis
protocol between BSC and BTS.  In other words, you can connect an existing
GSM Base Transceiver Station (BTS) through E1 to OpenBSC.

So far, it has only been tested with the Siemens microBTS BS-11.  Test reports
with other BTS are appreciated!

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

December 29, 2008
	Harald Welte <laforge@gnumonks.org>