LAC 0 / paging to all BTS

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Harald Welte laforge at gnumonks.org
Wed Sep 30 11:23:10 UTC 2009


Hi Zecke,

I've been reviewing some of your patches:

> commit 45f9b3d3fc47074652be951eb74df2b0be2a230f
> Author: Holger Hans Peter Freyther <zecke at selfish.org>
> Date:   Fri Aug 21 05:30:19 2009 +0200
> 
>     [paging] Use one of the two reserved LAC to page every BTS
>     
>     For the on-waves.com MSC case we want to page every BTS reached
>     of the network. Our gsm_subscriber entry does not have a LAC
>     entry set and defaults to zero. Use the reserved 0x0000 to
>     indicate that we want to use every bts in the network.
>     
>     This will influence the paging code to start and stop paging.

The problem is that in the current code, we use LAC == 0 to indicate that the
subscriber has sent an IMSI DETACH message, i.e. switched his phone off.

You are now redefiniing the LAC 0 to something like the opposite case, which
I don't particularly like.  Is there some alternative solution?

Regards,
-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
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