Feature Considerations - Avaya ESS User Manual

ESS Design and Planning
Feature limitations
Since there is no communication possible between the Gateway and the IP endpoint during a
link outage, button depressions are not recognized, feature access codes do not work, and any
other types of call handling ceases. In essence, the server cannot react to any stimuli until the
H.323 signaling link is restored.

Feature considerations

Note:
Features may act differently depending on the release of Communication
Note:
Manager.
Depending on the reason for the failure, some Communication Manager features may not work
as administered. If the failure is on the Main server(s) but the network is still intact, you may not
see any changes to features such as call forwarding, hunt groups, call coverage, etc. If the
network fragments, the same features may or may not work as intended.
This section highlights how a failover would affect the following Communication Manager
features:
Announcements
●
Attendant Console
●
Best Service Routing (BSR)
●
Call Classification
●
Call Coverage
●
Call Vectoring
●
Centralized Attendant Service (CAS)
●
Crisis Alert
●
CVLAN links
●
Facility Busy Indication
●
Hunt Groups
●
Leave Word Calling
●
Music on Hold
●
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