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Call Scenarios and Applications
Issue 7 March 1998
A-33
(ECS B)(ECS A)
Host
ECS A ECS B
Host
Event Notif Request (VDN=5008)
Event Notif ACK
Call offered to VDN 5008
Queued Event
Alerting Event
Connect Event
Drop Event
Call Ended Event
Incoming call
Interflow occurs
Event Notif Request (VDN=1111)
Event Notif ACK
Call goes to step 2 and LAI again
(queued in split 3999)
(from ISDN ALERT message)
ISDN trunk disconnect
(VDN 5008 event notif assoc)
Event Notif Request (VDN=2222)
Event Notif ACK
Call offered to VDN 1111
(VDN 1111 event notif assoc)
Drop
(VDN 1111 event notif assoc)
Call Ended
(VDN 1111 event notif assoc)
Call offered to VDN 1111
Call offered to VDN 1222
(VDN 1222 event notif assoc)
Alerting Event
(VDN 1222 event notif assoc)
Connect Event
(VDN 1222 event notif assoc)
Call Ended Event
(VDN 1222 event notif assoc)
Drop Event
(VDN 1222 event notif assoc)
Call does not route to 1222
Busy step rejects LAI call
Agents available this time, so call routes to 1222
Agent disconnects
Call redirected to VDN 1222