INTERNATIONAL  TELECOMMUNICATION  UNION

		     ITU-T RECOMMENDATION SUMMARY


Rec. No. : D.220

Title :	Charging  and  accounting  principles  to  be  applied  to  
international circuit-mode  demand  bearer  services  provided  over 
the  integrated  services  digital  network  (ISDN)

Study Group : III - Tariff and Accounting Principles

Version : Revised

Date of adoption : 1991

Notes :	



Recommendation D.220 sets out the general principles for charging and 
accounting to be applied by Administrations for the provision of 
international circuit-mode demand bearer services provided over the 
ISDN. 

In principle, there should be no charging and accounting 
discrimination between bearer services which require the same network 
resources and/or functions to provide the customer with the service 
requested.

When the network resources required to provide bearer services are 
different, the collection charges and accounting rates may depend on 
the costs of those resources.



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