15.1 PBX Configuration—[7-1] TRS—Denied Code
Toll Restriction (TRS)/Call Barring (Barring) prohibits an extension from making certain trunk calls. Each time
mode of every COS is assigned one of the seven TRS/Barring levels. TRS/Barring level 7 provides the
maximum restriction (all trunk calls are prohibited) and level 1 provides the minimum (all trunk calls are
allowed). TRS/Barring levels 2–6 are used to restrict calls according to the combination of denied codes here
and excepted codes in 15.2 PBX Configuration—[7-2] TRS—Exception Code. If the leading digits of the
dialled number are not found in the applicable Denied Code tables, the call is made.
A maximum of 100 denied codes can be programmed for each level. 20 codes are displayed at a time. To
display other sets of codes, click the applicable tab.
Level 2–Level 6
Specifies the leading digits of toll restricted numbers for each level.
Value Range
Max. 16 digits (consisting of 0–9, *, #, and X)
Maintenance Console Location
15.1 PBX Configuration—[7-1] TRS—Denied Code
PC Programming Manual References
10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—TRS—
TRS Level—Day,
Lunch, Break, Night
15.2 PBX Configuration—[7-2] TRS—Exception Code
Feature Guide References
2.7.1 Toll Restriction (TRS)/Call Barring (Barring)
780 PC Programming Manual
15.1 PBX Configuration—[7-1] TRS—Denied Code
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