BT Versatility
Installation and maintenance Manual
Call Barring
Extensions are entered into different Classes for barring purposes. There are 6 classes selected under 'Extension' programming. There are also four tables of codes selected in 'System' programming which determine additional codes that are barred or allowed:
•Select 'Extensions'
•Select Restriction classes
•Select 'Day class of service' or 'Night class of service'
•Select the class and enter the extensions
•Class 1 is no calls barred
•Class 2 is International calls barred. Also any additional codes added to Table 2 in Class codes programming are barred
•Class 3 is National and International numbers barred. Also any additional codes in Tables 2 and 3 in Class codes programming are barred.
•Class 5 is associated with extensions when codes entered in the 'Allowed Table’ in Class codes programming are to be allowed. This is combined with Classes 2 and 3
•Class 6 is the additional restriction codes in the Restricted Table in Class Codes programming. These can be combined with Classes 1,2 and 3.
Note: As the BT Versatility can support both ISDN and Analogue, it may be necessary to enable features for ISDN and Analogue options on the same system.
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