Mitel Sx 50 Dpabx Instructions Guide
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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 editions of it may be issued to incorporate such changes. Revision 0 9104-091-220-NA Issue 5
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 ............................................ 220 2-l 3. CALL ROUTING OPTIONS General ............................................................... 220 3-l Direct Distance Dialing ................................................... 220 3-l TieTrunkService ........................................................ 220 3-l Foreign ExchangeService ................................................. 220 3-2 WideAreaTelephoneService .............................................. 220 3-2 Other Common Carrier ................................................... 220 3-2 4. ARS FEATURES DESCRIPTION General ............................................................... 220 4-l Alternative Routing ...................................................... 220 4-l Selective Routing by Class of Service ........................................ 220 4-l LeastCostRouting ...................................................... 220 4-2 Toll Control ............................................................. 220 4-2 OverlapOutpulsing ...................................................... 220 4-2 Expensive Route Warning Tone ............................................. 220 4-3 Return DialTone ........................................................ 220 4-3 ARSCallback ........................................................... 220 4-3 5. ARS TABLES General ............................................................... 220 5-l ARS Digit Comparison Table (Command 700) .............................. 220 5-2 ARS Time-of-Day Table (Commands 701 to 745) ........................... 220 5-3 ARS Route List Table (Command 750) .................................... 220 5-4 ARS Digit Modification Table (Command 752) .............................. 220 5-6 6. ARS OPERATION General ............................................................... 220 6-l ProgrammingARS ....................................................... 220 6-l ARS Table Programming .................................................. 220 6-l Station Programming ..................................................... 220 &2 TrunkProgramming ...................................................... 220 6-3 System Programming .................................................... 220 6-3 9104-091-220-NA Issue 5 Revision 0 III
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 Table ......................... Digit Comparison Table ...................... ............................ 220 7-1 ............................ 220 7-l ............................ 220 7-l .............. : ............. 220 7-2 ........ ..F ................. 220 7-2 ............................ 220 7-5 ............................ 220 7-5 ............................ 220 7-5 ............................ 229 7-5, ............................ 220 7-6 ............................ 220 7-6 List of Figures Figure 3-l Typical Tie Trunk ............................................ 220 3-3 Figure 3-2 Typical Foreign Exchange Trunk ................................ 220 3-3 Figure 3-3 Typical OCC Arrangement ..................................... 220 3-4 Figure 5-l ARS Table Hierarchy ......................................... 220 5-l Figure 7-l Trunking Network ............................................ 220 7-3 Figure 7-2(a) Table Network .............................................. 220 7-7 Figure 7-2(b) Table Network ............................................... 220 7-8 iv Revision 0 910+091-220-NA Issue 5
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. 4. ARS Features Description: details the ARS feature package for the SX-50 sys- tem. 5. ARS Tables: describes the contents of the ARS Tables in the database. 6. ARS Programming: briefly describes the operation of the ARS feature. 7. Application Example: demonstrates the programming of the ARS feature using an example. Terminology 1.4 Throughout this Section, references are made to the customer, the installation company and the user. These terms are defined as follows: l The customer is the owner of the SX-50 system. l The installation company is a company which MITEL has authorized to sell and install SX-50 systems. This company determines the customer’s requirements and then installs and programs the system accordingly. l The user is a person who makes use of the SX-50 system through one of the sys- tem’s peripheral devices (telephone sets). 9104-091-220-NA Issue5 Revision 0 220 l-l
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. 220 l-2 Revision 0 9104-091-220-NA Issue 5
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 IO-digit string to each subscriber. This digit string is as follows: 613 - 592 - 2122 Area Code T- Office Code T Subscriber Number The Area Code defines a geographic telephone area; the Office Code identifies a Central Office (CO) within that area; and the Subscriber Number identifies a specific subscriber of that CO. When the North American Numbering Plan was first introduced, the distinction between Area and Office Codes was that the second digit of an Area Code was 0 or 1 while the second digit of an Office Code was between 2 and 9. However, as the number of COs grew, it became necessary in some areas to allow Office Codes with a second digit of 0 or 1. The resulting conflict between Area and Office Codes was resolved by introducing the prefix digit 1 for all toll calls. I An increased need for additional area codes has led to the development of new dialing plans. Although the plan has not yet been introduced, it will not only allow office codes with a second digit of 0 or 1, but will also allow area codes with a second digit of 2-9. There are numbers reserved for special services. For example, 411 is for directory assistance. These numbers do not conflict with Area or Office Codes. The current North American Numbering Plan includes digit strings of one, three, seven, eight and 11 digits. Some examples are: l Long Distance Toll Operator 0 l Service Number 411 l Local Call 592-2122 9104-091-220-NA Issue 5 Revision 0 220 2-l
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. 220 2-2 Revision 0 9104--091-220-NA Issue 5
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) feature of the SX-50 system monitors route usage. It provides information to guide future modifications as traffic demands change. Refer to Section 9104-091-221-NA, Station Message Detail Recording (SMDR), for details. The SX-50 system supports the following long distance services: l Direct Distance Dialing (DDD) l Tie Trunk l Foreign Exchange l Wide Area Telephone Service (WATS) l Other Common Carrier (OCC). Direct Distance Dialing 3.2 Direct Distance Dialing (DDD) allows telephone users to call subscribers within the home and international networks without the assistance of the operator. Connections are completed over standard trunk routes and are charged on a usage basis at a rate which varies with distance, time of day, and day of the week. DDD rates are provided in the local telephone directory, or contact the local Telephone Company for rate information not listed in the directory. Tie Trunk Service 3.3 Tie Trunk Service provides a link between two PBXs. The charge for each Tie Trunk is a flat rate based on the airline distance between the PBXs. Figure 3-l shows a typical Tie Trunk connection between an SX-50 system in City A, and an SX-50 system in City B. 9104-091-220-NA Issue5 Revision 0 220 3-l
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 Wide Area Telephone Service (WATS) meets the needs of customers who make or receive a large number of long distance calls. Calls are originated via Outward WATS Trunks and received over Inward WATS Trunks (800 Service). Generally, each trunk is arranged to provide inward or outward service, but not both. WATS divides the country into geographical zones, numbered outward from the home zone (Zone 1). The most distant zone the customer can reach defines the range of WATS coverage. For example, Zone 4 WATS provides access to Zones 1,2,3 and 4. The rates for both Outward and Inward WATS are based on the zone coverage and number of hours of service the customer buys. Other Common Carrier 3.6 Other Common Carrier (OCC) Service, offered by private companies, provides telephone service between major locations at a rate which is significantly less than that charged by the telephone companies. The rate is based on monthly subscription plus a usage charge. When a business subscribes to an OCC, it is issued with an account code (normally seven digits). Calls can then be routed via the company’s office by dialing a digit string similar to that shown in the following example: 9 - 745-1234 wait for dial tone, 1234567 305-994-l 234 & ’ l- Trunk Access I Code I Code I OCC Company’s Office I Long Distance Number This service has a restriction; some Common Carriers cover major locations only. Therefore, to avoid additional toll charges, the destination must be within local dialing distance of the OCC company office for that area. Refer to Figure 3-3, Typical OCC Arrangement. 220 3-2 Revision 0 9104091-220-NA Issue 5
- 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 9104--091-22O-NA Issue 5 Revision 0 220 3-3