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9.2 [7-2] Exception 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 Code
Tables in 9.1 [7-1] Denied Code and Exception Code Tables here. A call denied by the applicable Denied
Code Tables is checked against the applicable Exception Code Tables, and if a match is found, the call is
made.
A maximum of 100 exception codes can be programmed for each level. 20 codes are displayed at a time. To
display other sets of codes, click the applicable tab.
Exception Code Tables—Level 2–Level 6
Specifies the leading digits of the numbers to be exempted from toll restriction/call barring for each level.
Value Range
Max. 16 digits (consisting of 0-9, *, #, and X)
Maintenance Console Location
9.2 [7-2] Exception Code
Programming Manual References
4.12 [2-7-1] Class of Service—COS Settings—TRS— TRS Level—Day, Lunch, Break, Night
9.1 [7-1] Denied Code
Feature Guide References
1.9.1 Toll Restriction (TRS)/Call Barring (Barring)
PC Programming Manual 791
9.2 [7-2] Exception Code