Lucent Technologies 8.2 User Manual

Page of 1707
DEFINITY ECS Release 8.2
Administrator’s Guide  
555-233-506  
Issue 1
April 2000
Features and technical reference 
1212
Call Coverage 
20
DEFINITY ECS has no control over any redirection of the call that may 
take place at an off-net destination. However, further coverage treatment 
will be provided if the Off-Net Cvg Subsequent Redirection/CFWD No 
Ans Interval field expires before the call is answered off-net.
If the Coverage of Calls Redirected Off-Net field is not activated, the system does 
not monitor off-net calls and bring them back for additional call-coverage 
processing. In this case, once a call is directed to the remote call-coverage point, 
the principal is dropped from the call. Effectively, the off-net coverage point is the 
last coverage point in the coverage path.
VDN in a Call Coverage path
Assigning a VDN extension as the last point in a Call Coverage path allows the 
functionality of Call Vectoring to be applied to a coverage point. The 
programmable vector associated with the VDN effectively can provide great 
flexibility in call handling. The integration of the Call Vectoring and Call 
Coverage features can drive powerful AUDIX and Message Server applications.
For example, you can program the vector assigned to the VDN in the coverage 
path to queue a redirected call to a messaging split for call answer operation and to 
allow the caller to leave a message for the called principal. The same VDN also 
can be used to retrieve messages. The vector program may also be varied by time 
of day or split status to provide different types of coverage.
When a redirected call covers to a VDN, the principal’s simulated bridged 
appearance is removed when vector processing begins.
When covered or direct calls are connected to AUDIX or a messaging split via call 
vectoring, the original reason for redirection and the called principal must be 
passed to the adjunct over the Switch Communication Interface (SCI) link.
Use of a VDN as a coverage point provides integration to Centralized Messaging. 
That is, the Distributed Communications System (DCS) message sent to the 
remote switch with AUDIX includes the original reason for redirection and called 
principal.
An administration change is required to allow an extension that is assigned as a 
VDN to be entered as the last point in the coverage path. See DEFINITY ECS Call 
Vectoring/EAS Guide 
or DEFINITY BCS and Guestworks Call Vectoring Guide 
for more information.