Panasonic Digital Business System 576 Technical Manual

Section 700 - Operation Appendix A. ARS and TRS Operation
576-13-700 DBS 576 (USA), Revised 6/11/98  291
Appendix A. ARS and TRS Operation
Introduction
This appendix provides an overview of  the Toll Restriction Service (TRS) and Automatic 
Route Selection (ARS) features that are available with the DBS 576 PBX. 
• TRS provides the ability to block selected outgoing calls while allowing others.
• ARS  automatically finds the lowest cost way to send out a call. This feature is 
sometimes called Least Cost...

292 DBS 576 (USA), Revised 6/11/98 576-13-700
Appendix A. ARS and TRS Operation Section 700 - Operation
Detailed Description
This section provides a description of the TRS and ARS options on the DBS 576 PBX.
TRS Features
TRS Class Features
Each trunk and extension in the DBS 576 PBX is assigned to one of 50 TRS classes. Each 
TRS class is assigned a Day TRS level and a Night TRS level for each Trunk group. This 
assigned origination party TRS level is compared to the restriction TRS Level determined by...

Section 700 - Operation Appendix A. ARS and TRS Operation
576-13-700 DBS 576 (USA), Revised 6/11/98  293
Leading Digits Table
The leading digits table considers the initial dialed digits in determining the restriction TRS level. 
Up to 10 digits can be considered. The digits may be any number 0, 1-9. In addition a wild card (*) may be used 
to occupy any digit position. For instance *11 would consider the numbers 011, 111, 211, 311, 411, 511, 611, 
711, 811, 911. 
When considering the prefix string, the...

294 DBS 576 (USA), Revised 6/11/98 576-13-700
Appendix A. ARS and TRS Operation Section 700 - Operation
ARS Level
An ARS level is also assigned to each of the 50 TRS classes. This originator’s ARS value is used to determine 
if the caller can proceed to use a particular priority route based on the associated ARS requirement in the Route 
List (described later). The originator’s ARS value may be 0-9 where the higher number allows more calling 
access.
Queuing Point
The Route List provides up to 5 route...

Section 700 - Operation Appendix A. ARS and TRS Operation
576-13-700 DBS 576 (USA), Revised 6/11/98  295
Time List Table
Time List Table is used when the time of day, the day of week or the date affects the desired route. The Time 
List Table allows up to 50 patterns to be entered. Each pattern may specify up to five Route List patterns to used 
based on the current time of day.
Up to four Time List tables may be used. The referenced time list table is determined by the Special Day Table 
or the Day of...

296 DBS 576 (USA), Revised 6/11/98 576-13-700
Appendix A. ARS and TRS Operation Section 700 - Operation
TRS Programming/Operation Overview
The purpose of TRS is to restrict outside call origination based on the number dialed and the originator.
As shown in Figure A-4 TRS Operation (Non-ARS) at the end of this appendix, up to 50 TRS Classes settings 
are assigned. When a call is originated, several general settings for the originator are always considered:
•Digit Restriction - This is the maximum number...

Section 700 - Operation Appendix A. ARS and TRS Operation
576-13-700 DBS 576 (USA), Revised 6/11/98  297
Figure A-6.  TRS Flowchart

 	 	



 	

	  
 	 
	 
   
 
 
 	

 


 
 
  

 	

     
 !   

 	

     
 !   

 	
 	 	
  #
 
$	
  ...

298 DBS 576 (USA), Revised 6/11/98 576-13-700
Appendix A. ARS and TRS Operation Section 700 - Operation
If the analyze digits table is referenced by a Prefix ID, the system will consider at all entries with the Prefix ID 
and analyze any additional digits dialed. The system will look for the longest exact match. If there is an exact 
match, the system compares the entered TRS Restriction value to the call originator’s assigned TRS level. If the 
Restriction value is equal to or greater than the...

Section 700 - Operation Appendix A. ARS and TRS Operation
576-13-700 DBS 576 (USA), Revised 6/11/98  299
Implementation
The configuration of this system is described in the following steps: 
1.  The system needs are listed in Table 1, “Example - User Needs Worksheet,” on page 300.
Most of the information is straight forward. The Day TRS and Night TRS classes are determined by 
assigning consecutive Class numbers to each unique calling need. When a duplicate need is encountered, 
the same class number is...

300 DBS 576 (USA), Revised 6/11/98 576-13-700
Appendix A. ARS and TRS Operation Section 700 - Operation
Table A-1.   Example - User Needs Worksheet
a. After all user data has been entered, then assign class numbers. 
Tenant Name XYZ Department Stores     Tenant #   1   (1-72)
User Type
(office,  
executive, lobby)User Extension 
(or Trunk) Ports 
(BSSC) and 
NumbersDay Calling Needs
(Long Distance, 411, 
specific number, etc.)Night Calling Needs
(Long Distance, 411, 
specific number, etc.)Day TRS...