somes problems running OpenBSC with nanoBTS (1800)

Harald Welte laforge at
Sat Dec 12 13:38:52 CET 2009

On Wed, Dec 09, 2009 at 04:02:03PM +0100, Nordin wrote:
> Fabrice Ismael Poundeu Tchouatieu schreef:
> >Hye everyone,
> >
> >i'm trying to build a small GSM Network using OpenBSC and nanoBTS.
> >After the start of bsc_hack, when i try to scanned the network
> >with my mobile station, i do find the right network. But when i
> >try to register into this network, i'm not coming through. It's
> >the first time that i'm trying to used OpenBSC and i do not
> >exactly known how it works.
> You need to modify the config-file. Put under network the following:
> auth policy accept-all
> This will accept all MSs that want to register.

Which is a very DANGEROUS mode of operation, as chances are high it will accept
some phone that has lost signal or is on international roaming!  So even if you
have legal permission to operate your own gsm network (such as a test license),
an accept-all BTS will likely interfere with commercial GSM networks in your
vicinity and you will end up selectively denying service to people.  

This is punishable under criminal law in probably any country that I've ever
heard of!

So pleaes use extreme caution and never run an accept-all network on a
non-barred cell outside a faraday cage.

- Harald Welte <laforge at> 
"Privacy in residential applications is a desirable marketing option."
                                                  (ETSI EN 300 175-7 Ch. A6)

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