Lucent Technologies 555-230-220 User Manual

Call Scenarios and Applications

Issue  7 March 1998

This is a sample scenario for an incoming ISDN call that is routed via Adjunct 
Routing to an external destination. The user has subscribed to receive 4-digit 
DNIS numbers. As part of the route, the host requests collecting three digits from 
the caller.

Host

ECS

Offered Event 

Route Select

Route End

Comment

(called=84154422800, user code=collect 3 digits)

Incoming ISDN call to VDN:

Route Request

(collected digits=2)

Connect Event

Drop Event

Entered Digits Event

(digits=4*#)

Trunk Seized Event

(connected=####)

1. Collect 1 digit

2. Adjunct route
3. Wait 4 sec
Routes to external number
with digit collection

Digits entered

Destination answers

Calling party drops

Call terminates

Call Ended Event