diff options
Diffstat (limited to 'doc/manuals/message-sequences/a_interface_bringup.msc')
| -rw-r--r-- | doc/manuals/message-sequences/a_interface_bringup.msc | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/doc/manuals/message-sequences/a_interface_bringup.msc b/doc/manuals/message-sequences/a_interface_bringup.msc new file mode 100644 index 000000000..165262167 --- /dev/null +++ b/doc/manuals/message-sequences/a_interface_bringup.msc @@ -0,0 +1,31 @@ +msc { + hscale=2; + bsc[label="BSC"], stp[label="STP"], _msc[label="MSC"]; + + |||; + ||| [label="We assume the MSC is already well connected to the STP and MGW(CN)"]; + + --- [label="SCTP/IP level establishment"]; + bsc =>> stp [label="SCTP INIT"]; + bsc <<= stp [label="SCTP INIT_ACK"]; + bsc =>> stp [label="SCTP COOKIE_ECHO"]; + bsc <<= stp [label="SCTP COOKIE_ACK"]; + ||| [label="SCTP payload can now be carried over the link"]; + |||; + |||; + --- [label="M3UA level establishment (over SCTP)"]; + bsc =>> stp [label="M3UA ASPUP"]; + bsc <<= stp [label="M3UA ASPUP_ACK"]; + bsc =>> stp [label="M3UA ASPAC (routing context)"]; + bsc <<= stp [label="M3UA ASPAC_ACK (routing context)"]; + bsc <<= stp [label="M3UA NTFY (AS-ACTIVE)"]; + ||| [label="M3UA payload can now be carried over the link"]; + |||; + --- [label="BSSMAP level establishment (over SCCP/M3UA/SCTP)"]; + bsc =>> _msc [label="BSSMAP RESET (OPC=BSC, DPC=MSC)"]; + bsc <<= _msc [label="BSSMAP RESET ACK (OPC=MSC, DPC=BSC)"]; + ||| [label="BSSMAP connection-oriented data can now be exchanged"]; + |||; + --- [label="Repeat BSSMAP level establishment (to other MSCs in the pool)"]; + |||; +} |