diff options
Diffstat (limited to 'doc/manuals/message-sequences/mo_call-bsc-msc-mgw-aoip.msc')
| -rw-r--r-- | doc/manuals/message-sequences/mo_call-bsc-msc-mgw-aoip.msc | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/doc/manuals/message-sequences/mo_call-bsc-msc-mgw-aoip.msc b/doc/manuals/message-sequences/mo_call-bsc-msc-mgw-aoip.msc new file mode 100644 index 000000000..55fd6cd2f --- /dev/null +++ b/doc/manuals/message-sequences/mo_call-bsc-msc-mgw-aoip.msc @@ -0,0 +1,75 @@ +# MO-Call with OsmoBTS + OsmoBSC with true 3GPP AoIP +msc { + hscale=2; + ms [label="MS"], bts [label="OsmoBTS\n1.1.1.1"], bsc[label="OsmoBSC"], mgcp[label="OsmoMGW@BSC\n3.3.3.3"], m_sc[label="MSC"], mgw_m[label="MGW@MSC\n5.5.5.5"]; + + ms box m_sc [label="We assume a SDCCH is already established"]; + ...; + + ms -> m_sc [label="DTAP CC SETUP"]; + ms <- m_sc [label="DTAP CC CALL PROCEEDING"]; + + m_sc -> mgw_m [label="Request allocation of local RTP port"]; + m_sc <- mgw_m [label="Respond with RTP port the MGW bound to (5.5.5.5:4000)"]; + bsc <- m_sc [label="BSSAP ASSIGN REQ (3GPP AoIP, CN RTP IP/Port 5.5.5.5:4000)"]; + bts <- bsc [label="RSL CHAN ACT (TCH)"]; + bts -> bsc [label="RSL CHAN ACT ACK"]; + ms <-> bsc [label="RR Assignment of TCH"]; + ...; + + # connect BTS RTP with BSC-MGW RTP + bts <- bsc [label="IPA CRCX"]; + bts box bts [label="Bind to BTS-local RTP Port (1.1.1.1:1000)"]; + bts -> bsc [label="IPA CRCX ACK (1.1.1.1:1000)"]; + bsc -> mgcp [label="MGCP CRCX rtpbridge/2@mgw (1.1.1.1:1000)"]; + mgcp box mgcp [label="Bind to MGW-local RTP Port (3.3.3.3:2000)\nConnect to 1.1.1.1:1000"]; + bsc <- mgcp [label="MGCP CRCX rtpbridge/2@mgw OK (3.3.3.3:2000)"]; + bts <- bsc [label="IPA MDCX (3.3.3.3:2000)"]; + bts box bts [label="Connect RTP socket to remote (MGW) RTP Port"]; + bts -> bsc [label="IPA MDCX ACK"]; + bsc -> mgcp [label="MGCP MDCX rtpbridge/2@mgw (optional)"]; + bsc <- mgcp [label="MGCP MDCX rtpbridge/2@mgw OK (optional)"]; + ...; + + mgcp <- bsc [label="MGCP CRCX rtpbridge/2@mgw (5.5.5.5:4000)"]; + mgcp box mgcp [label="Bind to MGW-local RTP Port (3.3.3.3:3000)\nConnect to 5.5.5.5:4000"]; + mgcp -> bsc [label="MGCP CRCX rtpbridge/2@mgw OK (3.3.3.3:3000)"]; + ...; + + bsc -> m_sc [label="BSSAP ASSIGN CMPL (3GPP AoIP 3.3.3.3:3000)"]; + m_sc -> mgw_m [label="Request MGW to connect RTP to remote endpoint 3.3.3.3:3000"]; + mgw_m box mgw_m [label="Connect RTP to 3.3.3.3:3000"]; + ...; + + mgcp <=> mgw_m [label="RTP Audio 3.3.3.3:3000 5.5.5.5:4000"]; + bts <=> mgcp [label="RTP Audio 1.1.1.1:1000 3.3.3.3:2000"]; + ms <=> bts [label="Um Audio (bidirectional)"]; + ms <-> m_sc [label="DTAP CC ALERTING"]; + ...; + + ms <- m_sc [label="DTAP CC CONNECT"]; + ms -> m_sc [label="DTAP CC CONNECT ACK"]; + --- [label="Voice Call in Progress"]; + ms <- m_sc [label="DTAP CC DISCONNET"]; + ms <- m_sc [label="DTAP CC RELEASE"]; + ms <- m_sc [label="DTAP CC RELEASE COMPL"]; + ...; + bsc <- m_sc [label="BSSMAP CLEAR CMD"]; + m_sc -> mgw_m [label="Request release RTP port/termination"]; + mgw_m box mgw_m [label="Release RTP port 5.5.5.5:4000"]; + bsc -> m_sc [label="BSSMAP CLEAR COMPL"]; + bsc <- m_sc [label="SCCP RLSD"]; + bsc -> m_sc [label="SCCP RLC"]; + ...; + mgcp <- bsc [label="MGCP DLCX rtpbridge/2@mgw"]; + mgcp box mgcp [label="Release MSC-facing local RTP port (3.3.3.3:3000)"]; + mgcp -> bsc [label="MGCP DLCX rtpbridge/2@mgw OK"]; + + mgcp <- bsc [label="MGCP DLCX rtpbridge/2@mgw"]; + mgcp box mgcp [label="Release BTS-facing local RTP port (3.3.3.3:2000)"]; + mgcp -> bsc [label="MGCP DLCX rtpbridge/2@mgw OK"]; + + bts <- bsc [label="IPA DLCX"]; + bts box bts [label="Release BTS-local RTP port (1.1.1.1:1000)"]; + bts -> bsc [label="IPA DLCX OK"]; +} |