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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 <email@example.com>
Please note that as of March 2010, OpenBSC has a dependency to a library
called "libosmocore". You can obtain that library from