openbsc.git branch master updated. 0.15.0-513-g46edbc4

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Wed Nov 9 15:43:29 UTC 2016

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commit 46edbc4162634bba5247f9c0b0915ea09917d15c
Author: Holger Hans Peter Freyther <holger at>
Date:   Thu Aug 18 08:49:21 2016 +0200

    lchan: Release channel in case of late activation ack
    In case of the sysmoBTS and receiving a channel activation ack on a channel
    that was marked as broken, release it again.
    Use a normal release without SACCH deactivation and release the rqd_ta data.
    Also add a local variable 'ts' to shorten some lines.
    The typical situation where this would occur is with high latency between BTS
    and BSC (or NITB). If a channel activation ack does not arrive in time, a
    channel is marked broken, and never recovers after that. This patch will
    release the channel again, which will remove the BROKEN_UNUSABLE state and
    makes lchan available again. Reported by Rhizomatica.
    However, in case of packet loss, i.e. when the channel activation ack never
    arrives at the BSC, this patch does not provide a resolution of the
    On dynamic timeslots: clearing the dyn ts state could possibly happen in
    lchan_free() instead of in rsl_rx_chan_act_ack(). That's to be done in a
    separate patch, if at all.
    Tweaked-By: nhofmeyr
    Change-Id: I63dc0deaf15ba7c21e20b1e0c7b85f0437e183ed


Summary of changes:
 openbsc/src/libbsc/abis_rsl.c | 31 ++++++++++++++++++++++++++++---
 1 file changed, 28 insertions(+), 3 deletions(-)

The OpenBSC GSM Base Station Controller (+MSC/HLR/SGSN)

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