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Addressing and networking
November 2004
Avaya Modular Messaging Concepts and
Planning Guide
6-13
extension number they dial. The automated attendant transfers calls to the
primary extension. However, with Modular Messaging—MSS and
Modular Messaging—Exchange (except Exchange 5.5 server), Caller
Applications can be used to customize the Call Answering behavior for
each extension. For more information, see Caller Application support
on
page 6-13.
When a subscriber with multiple extensions sends a voice message to
another subscriber, and if the recipient wished to call the sender, the call
will be made to the primary extension of the sender.
As with the primary extension, secondary extension numbers are unique.
Outcall feature
support
Secondary extensions do not have an impact on the working of the Call
Me server and the MWI server. The MWI server will only control the
lamp state for the primary extension. All outcalls are made using the
primary extension.
Caller Application
support
With Modular Messaging—MSS and Modular Messaging—Exchange
(except Exchange 5.5 server), each secondary extension number may be
associated with a different front-door Caller Application.
If a Caller Application is associated with a called extension and the call is
then redirected to the telephone user interface (TUI), the Caller
Application is executed instead of any default call handling.
If no Caller Application is associated with an extension, TUI uses the
default call handling for the mailbox.
Multiple mailboxes per extension
Using Caller Applications, it is possible to achieve coverage for multiple
mailboxes from a single number. A single-level Caller Application can
transfer the caller to up to 9 mailboxes.
Call Answer callers hear “To leave a message for subscriber A, press 1.
To leave a message for subscriber B, press 2, and so on.” They then hear
an announcement from the relevant subscriber's mailbox, and can leave a
message.
To complete the configuration, administrators must create an association
that ties the deployed Caller App to a specified extension. This is the
extension that is dialed to reach multiple mailboxes.
Even when multiple mailboxes are set up for an extension, subscribers are
still capable of having their own extension number.
Note: An Enhanced-List Application (ELA) can be configured such
that calls can be made to the extension number of the ELA