cellular-infrastructure
/
osmo-bts
mirror of https://gerrit.osmocom.org/osmo-bts
9
0
Fork 0
Code Issues Releases Wiki Activity

lc15, sysmo: Use SID_FIRST_P1 to initiate DTX 

Some phone seems to not send SID_FIRST_P2 message which seems like a
different understanding of the DTX spec. L1 accommodates for that by
using P1 to supply data for SID. Hence we should use it to initiate DTX
and ignore P2 message in case of AMR HR.

Change-Id: Iaf993b89caa0ad49b97d1c745dcaf039f867f018
This commit is contained in:
Max 2016-08-13 12:54:26 +02:00
parent 70460814ce
commit c77b574d1f
2 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/osmo-bts-litecell15/tch.c
View File

@ -445,8 +445,7 @@ int l1if_tch_rx(struct gsm_bts_trx *trx, uint8_t chan_nr, struct msgb *l1p_msg)
case GsmL1_TchPlType_Amr:
rmsg = l1_to_rtppayload_amr(payload, payload_len, lchan);
break;
case GsmL1_TchPlType_Amr_SidFirstP2:
/* L1 do not give us SID_FIRST data, just indication */
case GsmL1_TchPlType_Amr_SidFirstP1:
memcpy(sid_first, payload, payload_len);
int len = osmo_amr_rtp_enc(sid_first, 0, AMR_SID, AMR_GOOD);
if (len < 0)

3
src/osmo-bts-sysmo/tch.c
View File

@ -548,8 +548,7 @@ int l1if_tch_rx(struct gsm_bts_trx *trx, uint8_t chan_nr, struct msgb *l1p_msg)
case GsmL1_TchPlType_Amr:
rmsg = l1_to_rtppayload_amr(payload, payload_len, lchan);
break;
case GsmL1_TchPlType_Amr_SidFirstP2:
/* L1 do not give us SID_FIRST data, just indication */
case GsmL1_TchPlType_Amr_SidFirstP1:
memcpy(sid_first, payload, payload_len);
int len = osmo_amr_rtp_enc(sid_first, 0, AMR_SID, AMR_GOOD);
if (len < 0)