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authorHarald Welte <laforge@gnumonks.org>2016-11-03 14:11:24 +0100
committerNeels Hofmeyr <neels@hofmeyr.de>2018-11-27 17:54:20 +0100
commita9b521e2cb0ea7787e8e7c5f3e441fd39f528b97 (patch)
tree3f5e5b85a0ff2805c0c4c357088bbed63b8eb4f1
parentd61b59bb18e237bbe61cd794465c25bff67bcd23 (diff)
rtp-amr: TCH/AHS Uplink: FACCH/H During DTX
New chapter contributed by Nutaq: * TCH/AHS Uplink: FACCH/H During DTX operation Change-Id: I4a9c58e02dcfeb388ff3a30ba321ea3cec325518
-rw-r--r--doc/manuals/abis/rtp-amr.adoc49
1 files changed, 48 insertions, 1 deletions
diff --git a/doc/manuals/abis/rtp-amr.adoc b/doc/manuals/abis/rtp-amr.adoc
index 6716800b..fbd6b501 100644
--- a/doc/manuals/abis/rtp-amr.adoc
+++ b/doc/manuals/abis/rtp-amr.adoc
@@ -843,7 +843,54 @@ msc {
ms => phy [label="L1 burst (sub-block 3 of speech frame N + sub-block 1 of speech frame N+1)"];
ms => phy [label="L1 burst (sub-block 4 of speech frame N + sub-block 2 of speech frame N+1)"];
phy => bts [label="PH-DATA.ind GsmL1_TchPlType_Amr (N)"];
- bts => mgw [label="RTP (AMR FT=0..7,Q=1)"];
+ bts => mgw [label="RTP (AMR FT=0..7,Q=1) MARKER=1"];
+}
+----
+
+==== TCH/AHS Uplink: FACCH/H During DTX operation
+
+The following procedure must be observed if a FACCH/H frame must be transmitted during DTX operation.
+
+["mscgen"]
+----
+msc {
+ hscale = 2;
+ ms [label="MS"], phy [label="BTS-PHY"], bts [label="BTS"], mgw [label="MGW"];
+
+ ...;
+ ms .. mgw [label="FACCH/H during DTX operation"];
+
+ ms -x phy [label="Supressed L1 burst"];
+ ms -x phy [label="Supressed L1 burst"];
+ phy -x bts [label="No PH-DATA.ind sent[BFI]"];
+ bts -x mgw [label="Suppressed RTP frame"];
+
+ ms => phy [label="L1 burst (block 1 of SID_ONSET + sub-block 1 of FACCH/H)"];
+ ms => phy [label="L1 burst (block 2 of SID_ONSET + sub-block 2 of FACCH/H)"];
+ phy -x bts [label="No PH-DATA.ind sent[BFI]"];
+ bts -x mgw [label="Suppressed RTP frame"];
+
+ ms => phy [label="L1 burst (sub-block 3+4 of FACCH/H)"];
+ ms => phy [label="L1 burst (sub-block 5+6 of FACCH/H)"];
+ phy -x bts [label="No PH-DATA.ind sent[BFI]"];
+ bts -x mgw [label="Suppressed RTP frame"];
+
+ ms => phy [label="L1 burst (sub-block 7 of FACCH/H + sub-block 1 of SID_FIRST_P1)"];
+ ms => phy [label="L1 burst (sub-block 8 of FACCH/H + sub-block 2 of SID_FIRST_P1)"];
+ phy => bts [label="PH-DATA.ind GsmL1_TchPlType_Amr_Onset"];
+ bts => bts [label="lchan_set_marker() and store CMI"];
+ phy => bts [label="PH-DATA.ind FACCH/H"];
+ bts => mgw [label="FACCH/H"];
+
+ ms => phy [label="L1 burst (sub-block 3 of SID_FIRST_P1 + block 1 of SID_FIRST_P2)"];
+ ms => phy [label="L1 burst (sub-block 4 of SID_FIRST_P1 + block 2 of SID_FIRST_P2)"];
+ phy -x bts [label="No PH-DATA.ind sent[BFI]"];
+ bts -x mgw [label="Suppressed RTP frame"];
+
+ ms -x phy [label="Supressed L1 burst"];
+ ms -x phy [label="Supressed L1 burst"];
+ phy => bts [label="PH-DATA.ind GsmL1_TchPlType_Amr_SidFirstP1"];
+ bts => mgw [label="RTP (AMR FT=SID,Q=1)"];
}
----