Mitel SX-200 Documentation page 538

1. GENERAL
I n t r o d u c t i o n
This Section gives a general description of the Automatic Route
1 . 0 1
Selection (ARS) feature, which is applicable to SX-lOO/SX-200
PABX when fitted with the Generic 217 software package. General
descriptions of the SX-lOO/SX-200 system are contained in Section
listing of applicable documents for these systems.
R e a s o n f o r R e i s s u e
This Section has been reissued to provide Universal Call Dis-
1 . 0 2
tribution, the SUPERSET 3TM set and the SUPERSET qTM set
information.
B r i e f D e s c r i p t i o n
1 . 0 3 When properly programmed, ARS causes the system to select
the lowest cost trunk available during selected times in a
24-hour period, for extension-initiated or console-initiated calls. A
user simply dials the ARS code followed by the required digits. The
feature will select the optimum routes available for the time period and
. .
will insert or delete appropriate routing digits. A 24-hour period may
be split into a maximum of three periods or schedules. Two of these
periods are programmable. The third period is automatically the re-
mainder of time left after the first two periods are programmed. These
time periods allow the ARS feature to take advantage of rate struc-
tures that may vary during a 24-hour period.
1.04 The ARS feature is compatible with other features in the sys-
tem, such as Speed Call (Section MITL9105/91 lo-096-220-NA)#
Traffic Measurement (Section MITLS 105/9 11 O-096-450-NA), Multi-Digit
Toll Control (Section MITL9105/91
sage Detail Recording (Section MITL91g5/91
2 . N U M B E R I N G P L A N ( N O R T H A M E R I C A N )
2 . 0 1 Almost every subscriber in the North American telephone sys-
tem may access any other subscriber by dialing a maximum of
10 or 11 digits. These digits consist of an optional toll prefix number
(usually l), a 3-digit area code, a 3-digit Central Office code and a
4-digit subscribei number (see Figure 2-1 and paragraph 5.12).
2.02 In the area code, the first digit may be any number except 1 or
0. The second digit must be 1 or 0. The .last digit may be any
number 0 through 9.
2.03 In the CO code, the first digit may be any number 2 through 9.
The second digit must not be either digit 0 or 1, and the last
digit may be any digit 0 through 9. It should be noted that there are
assigned service codes such as 911 or 411 that may conflict.
SECT I ON MITL9105/911
The foregoing section also contains a
o-0 9 6 -2 1 3 -N A
and Station Mes-
Page 1