BT BT Versatility Telephone User Manual


 
BT Versatility
Installation and maintenance Manual
48
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.