Specifications
IMl66-107
Description
of
System Features
Specialized Route Access
Software release 14A provides a specialized route
access feature that, when enabled, allows the system
to select a line group based on the digits the user has
dialed. By doing this, it matches calls with their best
suited routes. The feature provides a table-driven
routing scheme where the numbers that users dial
cause the system to chose a line group after
comparing the dialed number with entries that are
contained in an office code table, an area code table,
and four special area code look-up tables.
The specialized route access operates in the following
manner: When the caller presses ITCM and dials 9 or
presses a preprogrammed button, the system returns
a special dial tone. The caller then has 10 seconds in
which to dial some digits; otherwise, the telephone will
return to its idle state. Once a caller begins to dial
digits, he or she has a certain period of time in which
to dial each new digit. The system programmer
selects this time-out period through programming.
After the caller has stopped dialing digits and the end
of the time-out period has occurred, the system
analyzes the dialed digits and routes the call by
following the table-driven routing scheme depending
upon how the programmer has arranged the system.
The system routes calls based on comparison
matches between the dialed number and the entries
that it finds in either an office code table, an area code
table, or four special tables for selected area codes.
These tables contain 1000 entries from 000 to 999 and
the programmer can assign one line group to each
entry; therefore, a routing match is always possible.
The system matches dialed digits with table entries in
the following manner:
l
If the first digit that the caller dials is neither a 1 nor
a 0, and if he or she dials less than 10 digits (such
as : nnn-nnnn), the system evaluates the first three
digits as an off ice code, searches for the off ice
code in the office code table, and finds a line group,
If the first digit is either a 1 or a 0 (such as:
n-nnn-nnnn), the system ignores the first digit and
evaluates the next three digits as an office code,
searches for the office code in the office code table,
and finds a line group,
l
If the first digit that the caller dials is neither a 1 nor
a 0, and if he or she dials 10 digits or more (such
as nnn-nnn-nnnn), the system evaluates the first
three digits as an area code and the following three
digits as an office code.
If the first digit that the caller dials is either a 1 or a
0 (such as n-nnn-nnn-nnnn), the system ignores
the first digit, evaluates the next three digits as an
area code, and evaluates the following three digits
as an office code.
After digit evaluation the system routes the call as
per the following discussion: If there is a special
table that matches the dialed area code, the system
searches that table for the dialed off ice code and
finds a line group. If there is not a special table for
that area code, the system just searches the area
code table for it and finds a line group.
The following information illustrates the digit evaluation
scheme.
Qty.
of
Actual
Digits Dialed
. .
d
D@s
Digits Evaluated By System
To Find Line Group
c
7 67 067
3 116 118
t
4 5173
517
7
9787700 978
8
19787700 978
10
8049Z83700
1804.978
11
18849782200 1804,978
t
The example below shows how calls to area code 202
are routed using line group 2, calls to office code 202
are routed using line group 1, calls to office code 973
in area code 716 are routed using line group 4, and all
other calls are routed using line group 1.
901
1 1
DO7
1 1
707
1
7
1
317
1
1
1
973
1
4
1 1
998
1
1
999
1 1
Specialized Route Access
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continued on next page . .
2-22A
(TAB117p13)