laforge has submitted this change. (
https://gerrit.osmocom.org/c/osmo-bsc/+/42289?usp=email )
Change subject: nokia_site: Change the LAPD N200 counter for RSL
......................................................................
nokia_site: Change the LAPD N200 counter for RSL
This commit raises the LAPD RSL N200 (retransmission) counter for
Nokia RSL links. The reason is that the readiness of the TRX is not
signalled (OML) nor can be queried from the BTS in any way, and on
larger macro setups the TRX reset takes ~15 seconds, thus the RSL
bootstrap times out before the TRX becomes ready.
This issue presents itself with UltraSite types, does not affect
InSite or MetroSite (the later two are "integrated TRX" units).
More modern macro setups like the Flexi or Multiradio are likely
affected.
Runtime tested with InSite and UltraSite (multi-TRX).
Change-Id: Ie4bb804ea636eba2182586db13a625c5933eff31
---
M src/osmo-bsc/bts_nokia_site.c
1 file changed, 4 insertions(+), 1 deletion(-)
Approvals:
fixeria: Looks good to me, but someone else must approve
laforge: Looks good to me, approved
pespin: Looks good to me, but someone else must approve
Jenkins Builder: Verified
diff --git a/src/osmo-bsc/bts_nokia_site.c b/src/osmo-bsc/bts_nokia_site.c
index 3800d45..c5e31b7 100644
--- a/src/osmo-bsc/bts_nokia_site.c
+++ b/src/osmo-bsc/bts_nokia_site.c
@@ -117,10 +117,13 @@
#endif
if (start) {
+ /* Raise N200 for RSL to fix slow TRX reset */
+ if (link->sapi == SAPI_RSL)
+ ts->lapd->profile.n200 = 20;
ts->lapd->profile.t200_sec = 1;
ts->lapd->profile.t200_usec = 0;
lapd_sap_start(ts->lapd, link->tei,
- link->sapi);
+ link->sapi);
} else
lapd_sap_stop(ts->lapd, link->tei,
link->sapi);
--
To view, visit https://gerrit.osmocom.org/c/osmo-bsc/+/42289?usp=email
To unsubscribe, or for help writing mail filters, visit
https://gerrit.osmocom.org/settings?usp=email
Gerrit-MessageType: merged
Gerrit-Project: osmo-bsc
Gerrit-Branch: master
Gerrit-Change-Id: Ie4bb804ea636eba2182586db13a625c5933eff31
Gerrit-Change-Number: 42289
Gerrit-PatchSet: 5
Gerrit-Owner: csaba.sipos <[email protected]>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria <[email protected]>
Gerrit-Reviewer: laforge <[email protected]>
Gerrit-Reviewer: pespin <[email protected]>
Gerrit-CC: domi <[email protected]>
