ITU D.251:1988
ITU D.251:1988 General Charging And Accounting Principles For The Basic Telephone Service Provided Over The Isdn Or By Interconnection Between The Isdn And The Public Switched Telephone Network
Table of Contents
1Chargingprinciplesforthebasictelephoneservice
1.1Basictelephoneserviceprovidedby
interconnectionbetweentheISDNandthePSTN
1.2BasictelephoneserviceprovidedovertheISDN
2Internationalaccounting