diff options
authorHarald Welte <laforge@gnumonks.org>2017-12-10 19:58:16 +0100
committerHarald Welte <laforge@gnumonks.org>2018-01-04 11:13:41 +0000
commited23c1d83da08ded94ce7ce0d23ace79cb31dd61 (patch)
parentf93b31a5a7da5530fc35f6086347d241dcf0f90d (diff)
Reduce T3109 default from 19s to 5s
T3109 is started when the BSS sends a RR CHAN REL to the MS and stops downlink SACCH generation. Stopped when the MS successfully releases the LAPDm link. After stop or timeout, the radio channel is released using RSL RF CHAN REL. Recommended values in literature are 1-2s + RadioLinkTimeout*0.48s or 5s, while we had the absurdly high 19s timeout. This means we occupy the radio channel way longer than needed in situations where the MS is no longer able to properly release Layer2 (LAPDm DISC) due to loss of signal or the like. See also: https://osmocom.org/projects/osmobsc/wiki/Timers Change-Id: I7416b4118e5b73c6ffb98e3546bc62a36c7a967a Closes: OS#2734
1 files changed, 1 insertions, 1 deletions
diff --git a/include/osmocom/bsc/gsm_data.h b/include/osmocom/bsc/gsm_data.h
index 45fbcd21a..0ff58117e 100644
--- a/include/osmocom/bsc/gsm_data.h
+++ b/include/osmocom/bsc/gsm_data.h
@@ -197,7 +197,7 @@ static const struct rate_ctr_group_desc bsc_ctrg_desc = {
#define GSM_T3103_DEFAULT 5 /* s */
#define GSM_T3105_DEFAULT 100 /* ms */
#define GSM_T3107_DEFAULT 5 /* s */
-#define GSM_T3109_DEFAULT 19 /* s, must be 2s + radio_link_timeout*0.48 */
+#define GSM_T3109_DEFAULT 5 /* s, must be 2s + radio_link_timeout*0.48 */
#define GSM_T3111_DEFAULT 2 /* s */
#define GSM_T3113_DEFAULT 10 /* s */
#define GSM_T3115_DEFAULT 10