laforge has submitted this change. ( https://gerrit.osmocom.org/c/libosmo-abis/+/33282 ) Change subject: trau_sync: Add sync pattern for FA protocol of 3GPP TS 43.045 ...................................................................... trau_sync: Add sync pattern for FA protocol of 3GPP TS 43.045 The FA protocol is used to carry (modified) T.30 protocol (Fax G3) information over synchronous CSD bearers in GSM. It uses 64bit framing with a well-known sync pattern. Let's use the trau_sync infrastructure to synchronize to that framing. Change-Id: Ie2206e120f456d10b4f98d8aeb34fd8a499cb22c --- M include/osmocom/trau/trau_sync.h M src/trau/trau_sync.c 2 files changed, 29 insertions(+), 0 deletions(-) Approvals: Jenkins Builder: Verified pespin: Looks good to me, but someone else must approve laforge: Looks good to me, approved diff --git a/include/osmocom/trau/trau_sync.h b/include/osmocom/trau/trau_sync.h index 36388eb..542a329 100644 --- a/include/osmocom/trau/trau_sync.h +++ b/include/osmocom/trau/trau_sync.h @@ -15,6 +15,7 @@ OSMO_TRAU_SYNCP_16_ER_CCU, OSMO_TRAU_SYNCP_64_ER_CCU, OSMO_TRAU_SYNCP_64_ER_CCU_MCS9, + OSMO_TRAU_SYNCP_FA, /* TS 43.045 FA (Fax Adaptation) sync frame */ }; typedef void (*frame_out_cb_t)(void *user_data, const ubit_t *bits, unsigned int num_bits); diff --git a/src/trau/trau_sync.c b/src/trau/trau_sync.c index 60bfad7..e3b458a 100644 --- a/src/trau/trau_sync.c +++ b/src/trau/trau_sync.c @@ -274,6 +274,19 @@ }, .byte_len = 160, }, + [OSMO_TRAU_SYNCP_FA] = { + /* See Section 5.2.2.1 of 3GPP TS 43.045 */ + .name = "FA", + .byte_pattern = { + 0x3E, 0x37, 0x50, 0x96, + 0xC1, 0xC8, 0xAF, 0x69, + }, + .byte_mask = { + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + }, + .byte_len = 8, + }, }; static void expand_sync_pattern(struct sync_pattern *pat) -- To view, visit https://gerrit.osmocom.org/c/libosmo-abis/+/33282 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmo-abis Gerrit-Branch: master Gerrit-Change-Id: Ie2206e120f456d10b4f98d8aeb34fd8a499cb22c Gerrit-Change-Number: 33282 Gerrit-PatchSet: 1 Gerrit-Owner: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-MessageType: merged