29.4583GPPProtocol specificationRelease 8SIP Transfer of IP Multimedia Service Tariff InformationTISPANTS
For the purposes of the present document, the terms and definitions given in TS 181 002  and the following apply:
absolute time: time of the day representing GMT
add-on charge: single additional charge which does not change the current tariff
NOTE: An add-on charge can either be metered in non-monetary units (e.g. meter‑pulse) or in monetary-units (e.g. currency).
charge: number of charge units (for the usage of a chargeable event (telecommunication service))
Charge Determination Point (CDP): determines which tariff/add-on charge should be applied , and inserts the charging information to the appropriate SIP requests or responses
NOTE: Example of a CDP is a SIP AS at the visited IMS network providing the premium rate service.
Charge Generation Point (CGP): receives the charging information that was added by a CDP and transferred in the appropriate SIP requests or responses
NOTE: Example of a CGP is an originating SIP AS at the home IMS network for advice of charge purposes.
charge unit: base element for the charging process, expressed in non-monetary or monetary units
charging: function whereby information related to a chargeable event is formatted and transferred in order to make it possible to determine usage for which the charged party may be billed
real-time: time, typically in number of seconds, to perform the on-line mechanism used for fraud control and cost control
subtariff: within a tariff sequence, a charge unit per time unit
NOTE: Each subtariff has an individual duration and an individual charge unit.
tariff: set of parameters defining the network utilization charges for the use of a particular bearer / session / service
NOTE 1: A tariff can either be metered in non-monetary units (e.g. meter‑pulse) or in monetary units
NOTE 2: Relationship between tariff and charge units (charging) should be clarified.
NOTE 3: A tariff consists of a tariff sequence.
tariff determination instance: particular charging-related process with a corresponding communication between a charge determination point and a charge registration/charge generation point
tariff sequence: list of consecutive subtariffs which has to be applied for the charging of the communication event
NOTE: The subtariffs are applied at the start of the communication event and are applied consecutively according to the list of the subtariffs. The last subtariff may have an unlimited duration.
For the purposes of the present document, the following abbreviations apply:
AOC Advice Of Charge
AOCRG Add-On ChaRGing information
ASE Application Service Element
CDP Charge Determination Point
CGP Charge Generation Point
CRGT ChaRGing Tariff information
GMT Greenwich Mean Time
IMS IP Multimedia Subsystem
IP Internet Protocol
ISDN Integrated Service Data Network
ISUP ISDN User Part
NGN Next Generation Network
PSTN Public Switch Telephone Network
SIP Session Initiation Protocol
UE User Equipment