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Harald Welte gerrit-no-reply at lists.osmocom.orgReview at https://gerrit.osmocom.org/5283 Reduce T3109 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 --- M include/osmocom/bsc/gsm_data.h 1 file changed, 1 insertion(+), 1 deletion(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/83/5283/1 diff --git a/include/osmocom/bsc/gsm_data.h b/include/osmocom/bsc/gsm_data.h index a6c8198..ba3b217 100644 --- a/include/osmocom/bsc/gsm_data.h +++ b/include/osmocom/bsc/gsm_data.h @@ -266,7 +266,7 @@ #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 60 #define GSM_T3115_DEFAULT 10 -- To view, visit https://gerrit.osmocom.org/5283 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I7416b4118e5b73c6ffb98e3546bc62a36c7a967a Gerrit-PatchSet: 1 Gerrit-Project: osmo-bsc Gerrit-Branch: master Gerrit-Owner: Harald Welte <laforge at gnumonks.org>