Change in osmo-bsc[master]: osmo_bsc_msc: Use meaningful amr rate configuration on MSC level

dexter gerrit-no-reply at lists.osmocom.org
Fri Mar 1 17:06:26 UTC 2019


dexter has uploaded this change for review. ( https://gerrit.osmocom.org/13091


Change subject: osmo_bsc_msc: Use meaningful amr rate configuration on MSC level
......................................................................

osmo_bsc_msc: Use meaningful amr rate configuration on MSC level

The current default configuration for permitted AMR rates on MSC level is
not very useful since it only supports a single rate and neglects
Config-NB-Code = 1, which includes the four most common AMR rates
(12.2, 7.4, 5.9, 4.75) Lets make sure that those rates are are the default
for the MSC configuration.

Change-Id: I8b2a62879755a8a5edfa1aa36c748968a56aad0d
Related: SYS#4470
---
M src/osmo-bsc/osmo_bsc_msc.c
1 file changed, 5 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/91/13091/1

diff --git a/src/osmo-bsc/osmo_bsc_msc.c b/src/osmo-bsc/osmo_bsc_msc.c
index 71931e6..3a20a61 100644
--- a/src/osmo-bsc/osmo_bsc_msc.c
+++ b/src/osmo-bsc/osmo_bsc_msc.c
@@ -92,8 +92,12 @@
 	msc_data->allow_emerg = 1;
 	msc_data->a.asp_proto = OSMO_SS7_ASP_PROT_M3UA;
 
-	/* Defaults for the audio setup */
+	/* Defaults (Config-NB-Code = 1) for the audio setup, see also
+	 * 3GPP TS 28.062, Table 7.11.3.1.3-2 */
+	msc_data->amr_conf.m4_75 = 1;
 	msc_data->amr_conf.m5_90 = 1;
+	msc_data->amr_conf.m7_40 = 1;
+	msc_data->amr_conf.m12_2 = 1;
 
 	/* Allow the full set of possible codecs by default */
 	msc_data->audio_length = 5;

-- 
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Gerrit-Project: osmo-bsc
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I8b2a62879755a8a5edfa1aa36c748968a56aad0d
Gerrit-Change-Number: 13091
Gerrit-PatchSet: 1
Gerrit-Owner: dexter <pmaier at sysmocom.de>
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