falconia has uploaded this change for review. (
https://gerrit.osmocom.org/c/libosmocore/+/36895?usp=email )
Change subject: include/osmocom/gsm: add rtp_extensions.h
......................................................................
include/osmocom/gsm: add rtp_extensions.h
Previous patches add definitions of GSM0808_IE_THEMWI_RTP_EXTENSIONS
and RSL_IE_OSMO_RTP_EXTENSIONS to BSSMAP and RSL; this new header file
provides definitions for individual bits in the single value octet
of the new IE.
Related: OS#6448
Change-Id: I0eccfe5ddcf44f8f20440acb01e2d4870ec0cd91
---
M include/osmocom/gsm/Makefile.am
A include/osmocom/gsm/rtp_extensions.h
2 files changed, 39 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/95/36895/1
diff --git a/include/osmocom/gsm/Makefile.am b/include/osmocom/gsm/Makefile.am
index 5678a51..e42ffec 100644
--- a/include/osmocom/gsm/Makefile.am
+++ b/include/osmocom/gsm/Makefile.am
@@ -50,6 +50,7 @@
oap_client.h \
rlp.h \
rsl.h \
+ rtp_extensions.h \
rxlev_stat.h \
sysinfo.h \
tlv.h \
diff --git a/include/osmocom/gsm/rtp_extensions.h
b/include/osmocom/gsm/rtp_extensions.h
new file mode 100644
index 0000000..edea431
--- /dev/null
+++ b/include/osmocom/gsm/rtp_extensions.h
@@ -0,0 +1,23 @@
+/*
+ * Themyscira Wireless Technical Specification TW-TS-003 defines a BSSMAP
+ * extension whereby a CN implementation and a BSS implementation can
+ * negotiate the use of non-3GPP-standard extensions to RTP user plane,
+ * extensions that modify RTP formats counter to the stipulations of
+ * 3GPP TS 48.103. There is also a private Osmocom-defined IE in Abis RSL
+ * that communicates the same RTP extensions from OsmoBSC to OsmoBTS.
+ *
+ * This header file defines the meaning of the bits in the first (and currently
+ * only) value octet of the TLV IE added to BSSMAP and RSL interfaces,
+ * namely, GSM0808_IE_THEMWI_RTP_EXTENSIONS and RSL_IE_OSMO_RTP_EXTENSIONS.
+ * It is based on this authoritative definition:
+ *
+ * https://www.freecalypso.org/specs/tw-ts-003-v010002.txt
+ *
+ * Section 5.3 in the above specification defines the assignment of
+ * individual bits in the single value octet.
+ */
+
+#pragma once
+
+#define OSMO_RTP_EXT_TWTS001 0x01
+#define OSMO_RTP_EXT_TWTS002 0x02
--
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Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Change-Id: I0eccfe5ddcf44f8f20440acb01e2d4870ec0cd91
Gerrit-Change-Number: 36895
Gerrit-PatchSet: 1
Gerrit-Owner: falconia <fal...@freecalypso.org>
Gerrit-MessageType: newchange
