diff options
| author | Holger Hans Peter Freyther <zecke@selfish.org> | 2011-12-27 22:24:17 +0100 |
|---|---|---|
| committer | Holger Hans Peter Freyther <zecke@selfish.org> | 2012-12-23 20:18:18 +0100 |
| commit | 8582535c829e6a40591448e4b794af8fb022624e (patch) | |
| tree | f4b9cf4116e054bb8cc03d72efda40328c0b17e3 /openbsc/doc | |
| parent | 960c4044e61c8b4a522649c5d0e8f29b777356a6 (diff) | |
lchan: Release the lchan more quickly, align with GSM 04.08
* Release all channels with SAPI > 0 with the "local end release"
(as of NOTE 1 of GSM 04.08).
* No need to wait for all SAPIs to be torn down and the normal
REL_IND/REL_CONF will call rsl_handle_release and the channel
should be released.
* Update the documentation
Diffstat (limited to 'openbsc/doc')
| -rw-r--r-- | openbsc/doc/channel_release.txt | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/openbsc/doc/channel_release.txt b/openbsc/doc/channel_release.txt index e578aa828..bd707b451 100644 --- a/openbsc/doc/channel_release.txt +++ b/openbsc/doc/channel_release.txt @@ -56,21 +56,20 @@ bsc_api.c:gsm0808_clear * Release the primary lchan with normal release, SACH deactivate chan_alloc.c:lchan_release(chan, sacch_deactivate, reason) - * Start release procedure. It is working in steps with callbacks - coming from the abis_rsl.c code. - * Release all SAPI's > 0, wait for them to be released - * Send SACH Deactivate on SAPI=0 - * Finally Release the channel + * Start the release procedure. It is working in steps with callbacks + coming from the abis_rsl.c code. + * Release all SAPI's > 0 as local end (The BTS should send a + REL_CONF a message) + * Send SACH Deactivate on SAPI=0 if required. + * It should start T3109 but it does not. + * abis_rsl.c schedules the RSL_MT_RF_CHAN_REL once all SAPI's are + released and after T3111 has timed out or there is an error. RX of RELease INDication: * Calls internal rsl_handle_release which might release the RF. - * Informs chan_alloc.c about the release with - rsl_lchan_rll_release. -RX of RELease CONFimem: +RX of RELease CONFirmation: * Calls internal rsl_handle_release which might release the RF. - * Informs chan_alloc.c about the release with - rsl_lchan_rll_release. * RX of RF_CHAN_REL_ACK * call lchan_free() |