15.2 PBX Configuration—[7-2] TRS—ExceptionCodeToll Restriction (TRS)/Call Barring (Barring) prohibits an extension from making certain trunk calls. Each timemode of every COS is assigned one of the seven TRS/Barring levels. TRS/Barring level 7 provides themaximum restriction (all trunk calls are prohibited) and level 1 provides the minimum (all trunk calls areallowed). TRS/Barring levels 2–6 are used to restrict calls according to the combination of denied codes in15.1 PBX Configuration—[7-1] TRS—Denied Code and excepted codes here. A call denied by the applicableDenied Code tables is checked against the applicable Exception Code tables, and if a match is found, the callis made.A maximum of 100 exception codes can be programmed for each level. 20 codes are displayed at a time. Todisplay other sets of codes, click the applicable tab.Level 2–Level 6Specifies the leading digits of the numbers to be exempted from toll restriction/call barring for each level.Value RangeMax. 16 digits (consisting of 0–9, *, #, and X)Maintenance Console Location15.2 PBX Configuration—[7-2] TRS—Exception CodePC Programming Manual References10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—TRS— TRS Level—Day,Lunch, Break, Night15.1 PBX Configuration—[7-1] TRS—Denied CodeFeature Guide References2.7.1 Toll Restriction (TRS)/Call Barring (Barring)PC Programming Manual 71515.2 PBX Configuration—[7-2] TRS—Exception Code
