Mitel Sx 50 Dpabx Instructions Guide

Automatic Route Selection and Toll Control 
NOTICE 
The information contained in this document is believed to be accurate in all 
respects but is not warranted by Mite1 Corporation (MITEL@). The informa- 
tion is subject to change without notice and should not be construed in any 
way as a commitment by Mite1 or any of its affiliates or subsidiaries. Mite1 
and its affiliates and subsidiaries assume no responsibility for any errors or 
omissions in this document. Revisions of this document or new...

Table of Contents 
1. INTRODUCTION 
General 
............................................................... 220 l-l 
Reason for Reissue ...................................................... 
220 l-l 
Section Overview 
............................ .^. .......... i ............... 220 l-l 
Terminology ............................................................ 
220 l-l 
2. 
NUMBERING PLANS 
General 
.................................................. ..-..........:. 220 2-l 
North American Numbering Plan...

Automatic Route Selection and Toll Control 
7. APPLICATION EXAMPLE 
General .......... . ........................ 
Scenario .................................. 
Assigning Trunk Groups ..................... 
Assigning Routing Classes of Service ........... 
Completing the ARS Tables ................... 
Describing the Contents of the Table Network ..... 
Digit Modification Table ...................... 
Route Table ............................... 
Route List Table ............................ 
Time-of-Day...

1 
’ INTRODUCTION 
General 
1.1 This Section describes the Automatic Route Selection (AR’S) feature of the SX-50s 
Digital Private Automatic Branch Exchange (DPABX). 
Reason for Reissue 
H 1.2 
This section has been reissued to incorporate MS55 software. 
Section Overview 
1.3 This Section is divided into 7 parts as described below: 
1. Introduction: this Part. 
2. Numbering Plans: describes the North American Plan. 
3. Call Routing Options: details the different types of lines available to the customer....

Automatic Route Selection and Toll Control 
The routing and connection of a trunk call via ARS is governed by route availability, cost 
(when more than one route exists) and the user’s toll restriction. The process is 
transparent to the caller; the system automatically modifies the dialed digits to the 
requirements of the different routes. 
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2 . 
NUMBERING PLANS 
General 
2.1 The ARS feature is compatible with virtually all numbering plans employed by public 
networks. It is necessary to understand the numbering plan of the public network 
which serves the DPABX in order to make full use of the toll control application of the 
ARS feature. . 
North American Numbering Plan 
2.2 The numbering plan enables any subscriber in the network to be connected to any 
other subscriber in the network. The North American Numbering Plan assigns a 
unique...

Automatic Route Selection and Toll Control 
l Toll Call Within an Area l-555-2323 
l Toll Call td Another Area l-41 6-555-3333. 
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3 
’ CALL ROUTING OPTIONS 
General 
3.1 Telephone companies offer a number of different methods of routing calls over the 
public network. These include Tie Trunks, WATS lines and Foreign Exchange Lines. 
Each has a different cost structure. Correct use of these trunks provides substantial 
savings to the user. The installation company should complete a traffic survey prior to 
installation to determine which routing options are best suited to the DPABX. 
The Station Message Detail Recording (SMDR)...

Automatic Route Selection and Toll Control 
Foreign Exchange Service 
3.4 A Foreign Exchange (FX) Trunk is a trunk from a CO located in another telephone 
area. Through an FX Trunk, the PBX appears to the distant CO as a local subscriber 
and is billed accordingly. FX Trunks reduce cost where many calls are made to one 
distant area. An FX trunk allows customers in the distant area to call the company 
office without incurring toll charges. (Refer to Figure 3-2). 
Wide Area Telephone Service 
3.5 The...

- 
Call Routing Options 
AREA COOE 613 
AREA CODE 416 
- - - INDICATES TIE LINE 
DO0026 
Figure 3-1 Typical Tie Trunk 
_ 4 AAEACODE613, / 
AREA CODE 416 
- - - INDICATESFOREIGN 
EXCHANGE UNE 
Figure 3-2 Typical Foreign Exchange Trunk 
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Revision 0 220 3-3