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5-20 Call control procedures
Figure 5-11
Trunk release sequence of events
1.
2.
3.
Figure 5-12 illustrates the trunk release messaging sequence and shows how
calls are routed from the EVS switch into the EVS ARU over PRI trunks,
then transferred to a new destination through the EVS switch.
297-2521-106 Standard 23.01 March 2001
Transferred
Incoming trunk
call prior to
releasing
PRI trunks.
Outgoing trunk
Incoming trunk
Bridged
call prior to
releasing
Outgoing trunk
PRI trunks.
Incoming trunk
Transferred/
bridged after
releasing
Outgoing trunk
PRI trunks.
EVS switch
PRI
EVS switch
PRI
EVS switch
EVS ARU
EVS ARU
EVS ARU
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