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Server Cards
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ISDN-PRI Card
ISDN-PRI Card User Screens and Settings
5.3.12 Assignment of Services Screen
Some carriers support call-by-call service selection in their ISDN PRI offerings. This feature 
allows users to select a different service (and, usually, a different billing rate) for each call 
placed.
If call-by-call service is supported, users must tell the system which service(s) is/are supported 
by each D channel, and what the code is for each service. The carrier will supply a service code 
for each supported service. The Service format code is always two digits, a space and the 
name of the service. When placing a call using call profiles, only valid service codes will be 
allowed (see Call Profiles below for additional information about services).
If call-by-call service selection is not supported by the carrier or not required for the user’s 
applications, then there is no need to assign service to a D channel.
Figure 5-19 shows the Services screen and the assignment of two mythical services 
(MASTERPIECE and BUSINESS PLAN) to D channel #1. The service codes of “01” and 
“02” were assigned by the carrier to these services. Remember to Save your work before 
returning to the top level D channel configuration screen.
(Pressing the Clear command will erase all Service entries for the highlighted D channel.)
Figure 5-19. Assigning Services Screen