Instruction manual

DEFINITY® Business Communications System and GuestWorks® Issue 6
Overview
555-231-208
Issue 1
April 2000
Networking Solutions
9-6Network management features
9
Facility Restriction Levels
Facility Restriction Levels are used to limit user calling privileges for incoming and
outgoing calls. The Facility Restriction Level determines if a call attempt is
permitted and which routes can be used or denied in the routing process. Through
use of the system’s management tools, eight Facility Restriction Levels can be
assigned to telephones, computers, and trunk groups. The system does not
require the Facility Restriction Level to be in ascending order when administered
in the patterns or preferences through system management.
When a call is attempted, the system compares the Facility Restriction Level of
the telephone with the Facility Restriction Level of the trunk routes available to
complete the call. If the Facility Restriction Level of the telephone is equal to or
higher than the Facility Restriction Level of trunks, the call is completed; if it is
lower, the call is blocked on that preference and compared to the Facility Restric-
tion Level of the next route available. If the call fails to match the Facility Restric-
tion Level on the available preferences, the call may queue for the first available
and compatible trunk group.
The system also provides a feature called Alternate Facility Restriction Levels that
allows the attendant to temporarily change the Facility Restriction Levels on origi-
nating facilities to a different set of Facility Restriction Levels. It is used to grant
users greater access to trunking facilities than is normally provided, such as when
charges are lower during evening hours.
Bearer-Capability Class
Bearer-capability class uses information available in the system to match the
calling requirements of a specific call with the best available resources to support
that call. Bearer capability applies to all calls and support facilities, but is of
primary significance for data calls. Each call has a bearer requirement — that is, a
set or range of requirements needed to support that call. For data calls, these
requirements include data rate, synchronization, and channel type.
Authorization Codes
Authorization codes are used on certain calls to temporarily raise a telephone’s
Facility Restriction Level. This is useful for those who make calls from telephones
other than their own or from outside the network. If a call you dial is blocked
because the telephone’s Facility Restriction Level is too low, you can enter your
authorization code. If the Facility Restriction Level associated with the
authorization code is equal to or higher than the Facility Restriction Level of the
trunk facilities required to place the call, the call is then completed. Up to 5000
(csi/si) or 90000 (r) different authorization codes can be provided for your system
at any one time. Authorization codes can be from 4 to 13 digits long. Through the
use of the system’s management tools, you can assign authorization codes and
change their associated Facility Restriction Level and network access
permissions.