Exception Code Tables
Exception Code Tables are preprogrammed lists of leading digits or complete telephone numbers which are
checked against every dialed number prohibited by a Denied Code Table. When a user dials a number
prohibited by a Denied Code Table, it is compared to at least one Exception Code Table. If the dialed number
matches an entry found in the applicable Exception Code Table, the call is permitted.
There are five Exception Code Tables. Each table applies to a corresponding TRS level as well as the level(s)
preceding it, as explained below.
TRS Override by System Speed Dialing
When TRS Override by System Speed Dialing is enabled for the PBX, each COS has an additional TRS level
applicable only to calls made using System Speed Dialing.
4.11 [2-7-1] Class of Service—COS Settings—TRS— TRS Level for System Speed Dialing
[300] TRS Override by System Speed Dialing
This allows extension users to use System Speed Dialing to make CO line calls which are normally prohibited
by the TRS level of their assigned COS. If, for example, a user’s TRS level is 7, that user normally cannot
make any CO line calls. However, if the same user’s TRS level for System Speed Dialing is level 1, the user
can make a CO line call to any number stored in System Speed Dialing.
TRS Level
The TRS level is determined by the telephone codes set in the Denied Code Tables and Exception Code
Tables.
As shown in the table below, the Denied Code Tables for the higher levels are applied to all levels below it,
and the Exception Code Tables for the lower levels are applied to all levels above it.
Denied Code Tables*1 Exception Code Tables*2
Level 1 Not Programmable Not Programmable
Level 2 Table for Level 2 Tables for Levels 2 through 6
Level 3 Tables for Levels 2 and 3 Tables for Levels 3 through 6
Level 4 Tables for Levels 2 through 4 Tables for Levels 4 through 6
Level 5 Tables for Levels 2 through 5 Tables for Levels 5 through 6
Level 6 Tables for Levels 2 through 6 Tables for Level 6
Level 7 Not Programmable Not Programmable
*1 9.1 [7-1] Denied Code—Denied Code Tables—Level 2–Level 6
[301] TRS Denied Code
*2 9.2 [7-2] Exception Code— Exception Code Tables—Level 2–Level 6
[302] TRS Exception Code
[Usage Example] Using this method, certain outgoing CO line calls (e.g., international/cellular phone/long
distance) can be restricted as in the example below:
Restricted Allowed
Level 1 No Restriction
Level 2
(Boss)
•International Calls •Countries where Clients are
Located
•Cellular Phone Calls
•Long Distance Calls
•Local Calls
316 Feature Manual Document Version 2008-11
17.1.6 TRS (Toll Restriction)