Specifications

Description of System Features lMl66-1.07
Specialized Route Access - continued
The programmer can arrange for the system to insert
up to six digits ahead of a dialed number for a selected
line group. This feature is useful if the dialed number
must match a specific common carrier format.
To help understand this digit insertion, review this
typical arrangement for transparent CENTREX
operation (This example assumes that the CENTREX
extensions do not conflict with the office codes.): With
the digital telephone system installed behind a
CENTREX system, callers can make outgoing calls
without having to dial 9. Assume that the CENTREX
extensions are 3300 -3399. Take programming action
to assign line group 2 to entries 330 - 339 in the office
code table. This means that calls on CENTREX
extensions will use line group 2 and all other calls will
default to use line group 1. Program the 9 digit as the
insertion digit for line group 1. With this set up, when
a caller dials a number other than a CENTREX
extension, the system automatically inserts a 9 ahead
of the dialed digits and routes the call over line group 1.
If no lines are free in a selected line group, the system
will route the call to an overflow line group if the
programmer has assigned one; otherwise, the system
will return busy tone to the caller.
NOTE: If the programmer has arranged for the system
to insert digits on a particular line group, he or
she should consider arranging for the system
to insert digits in the overflow line group as
well. This consideration is necessary only if it
is important for the call to route through the
same common carrier as was the original line
group.
Using Specialized Route Access For Simplified
Toll Restriction
In anticipation of the implementation of the revised
North American dialing plan, the SRA feature
provides the system with the ability to deny calling to
designated area or off ice codes. The programmer
merely assigns a line group that contains no assigned
lines to the designated office or area code. This
prevents the system from routing calls for dialed
numbers containing those particular area or office
codes since there is no line available. This action will
work only for manually dialed numbers because
automatically dialed numbers, with no line preselect,
employ the last used line and therefore cannot be
restricted.
(TAB1 17~14)
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