1.20 Integrated Services Digital Network (ISDN) Service Features
1.20.1.3 Advice of Charge (AOC)
Description
The PBX can receive the call charge information on ISDN lines from the telephone company. There are the following types:
Type | Description |
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Advice of Charge During Call | AOC is received during the call and when the call is |
completed. | |
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Advice of Charge | AOC is received when the call is completed. |
At End of Call |
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This feature complies with the following European Telecommunication Standard (ETS) specifications: ETS 300 182 Advice of Charge (AOC) supplementary service Digital Subscriber Signalling System No. One (DSS1) protocol.
Conditions
•A DPT user can see the call charge information on the display during the call.
•Budget Management
If the amount of call charge reaches the preprogrammed limit, an extension user cannot make further calls. ( 
1.8.2 Budget Management)
•AOC for ISDN extension
An ISDN extension also receives AOC.
