diff options
| author | Harald Welte <laforge@gnumonks.org> | 2019-06-02 18:06:40 +0200 |
|---|---|---|
| committer | laforge <laforge@gnumonks.org> | 2019-06-13 15:38:01 +0000 |
| commit | 1ff0a2addd04de5bfe1601e84b013c65e500faf0 (patch) | |
| tree | e59d509b2fddb132d9f5a6ce6ecbc80229015db5 /src | |
| parent | 8ea9ba6af8317d4240d86d3f5dfb6c176b22a9b6 (diff) | |
Update T200 timer default values
The default values of 1s were *very* long, particularly for fast
channels such as FACCH. Let's use much more aggressive values
that are more in-line with various recommendations that cold be
found online, such as
https://pcstelconext.wordpress.com/2011/05/02/2g-timer-explanations/
https://www.erlang.com/forum/erlang/thread.htx?thread=2844
https://www.erlang.com/forum/erlang/thread.htx?thread=7180
https://de.slideshare.net/BisiAdebambo/138078380-gsmtimers-59637131
Change-Id: Ic1268ae2d769b12da6cdd4ac8375e4bc033a9e3e
Diffstat (limited to 'src')
| -rw-r--r-- | src/common/oml.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/src/common/oml.c b/src/common/oml.c index ad58cb92..7d245099 100644 --- a/src/common/oml.c +++ b/src/common/oml.c @@ -476,16 +476,16 @@ int oml_mo_tx_sw_act_rep(const struct gsm_abis_mo *mo) return oml_mo_send_msg(mo, nmsg, NM_MT_SW_ACTIVATED_REP); } -/* The defaults below correspond to the libosmocore default of 1s for - * DCCH and 2s for ACCH. The BSC should override this via OML anyway. */ +/* The defaults below correspond to various sources/recommendations that could be found online. + * The BSC should override this via OML anyway. */ const unsigned int oml_default_t200_ms[7] = { - [T200_SDCCH] = 1000, - [T200_FACCH_F] = 1000, - [T200_FACCH_H] = 1000, - [T200_SACCH_TCH_SAPI0] = 2000, - [T200_SACCH_SDCCH] = 2000, - [T200_SDCCH_SAPI3] = 1000, - [T200_SACCH_TCH_SAPI3] = 2000, + [T200_SDCCH] = 220, + [T200_SDCCH_SAPI3] = 450, + [T200_SACCH_SDCCH] = 900, + [T200_FACCH_F] = 250, + [T200_FACCH_H] = 250, + [T200_SACCH_TCH_SAPI0] = 1500, + [T200_SACCH_TCH_SAPI3] = 1500, }; static void dl_set_t200(struct gsm_bts *bts, struct lapdm_datalink *dl, unsigned int t200_msec) |