Lucent Technologies Octel Unified Messenger Concepts and Planning Guide 101-1620-005 - Manual (Page 65)

Designing addressing schemes
101-1620-005 4-5
Numeric addresses
A numeric address enables subscribers to address any Octel Unified
Messenger recipient in an organization.
Every Octel Unified Messenger recipient must be assigned a unique
numeric address. The numeric address allows a subscriber to send a
message to any recipient from the telephone user interface without having
to know the recipient’s location. The Exchange directory ensures that all
numeric addresses are unique, and makes them available to all locations
within the organization.
It is recommended that all numeric addresses have the same number of
digits. However, the length of a numeric address must not be the same as
the length of the local mailbox number in any voice mail domain within
the organization. If the lengths conflict, Octel Unified Messenger cannot
distinguish between a local mailbox number and a numeric address. It
assumes the address is a local mailbox number. To avoid conflicts with
the length of any local mailbox numbers, leading digits may be added to
numeric addresses.
Organizations may choose to use telephone numbers for numeric
addresses because they are unique. Other possible schemes include:
n A geographic location code associated with a local mailbox
number.
n Social security numbers.
n Employee numbers.
n Short numeric addresses, such as “55” for a Help Desk, or “1” for
the CEO’s office etc.