ISO IEC 15049:1997 pdf download – lnformation technology – Telecommunications and informationexchange between systems- Privatelntegrated Services Network — Specification, functional model and information flows -Advice of charge supplementary services

ISO IEC 15049:1997 pdf download – lnformation technology – Telecommunications and informationexchange between systems- Privatelntegrated Services Network — Specification, functional model and information flows -Advice of charge supplementary services.
ISO IEC 15049 specifies the Supplemecntary Services Advice of Charge (SS-AOC), which are applicable to variousbasic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISOIEC 11574.
SS-AOC is a set of supplementary services which enable a user to receive information about the charging of its calls that leavethe PISN and enter another network.
AOC-s enables the user to receive information about the charging rates at call set-up time and also to receive furtherinformation during the call if there is a change of charging rates.
AOC-D enables the user to receive information on the recorded charges during the active phase of the call.AOC-Eenables the user to receive information on the recorded charges when the call is terminated.
The provision of charging information to the called user, the provision of charging information for calls that do not leave thePISN, and PISN accounting are outside the scope of this International Standard.
Charging assumptions which apply to the specification of SS-AOC in this International Standard are contained in annex D.Service specifications are produced in three stages, according the method described in CCTTT Rec.L.130.This InternationalStandard contains the stage 1 and stage 2 specifications of SS-AOC. The stage 1 specifications (clauses 6,7, 8) specify thesupplementary services as seen by users of PISNs. The stage 2 specification (clause 9)identifies the functional entitiesinvolved in the supplementary services and the information flows between them.
2Conformance
In order to conform to this International Standard, a Stage 3 standard shall specify signalling protocols and equipmentbehaviour that are capable of being used in a PISN which supports the supplementary services specified in this InternationalStandard.This means that, to claim conformance, a Stage 3 standard is required to be adequate for the support of those aspectsof clauses 6, 7 and 8 (stage l) and clause 9 (stage 2) which are relevant to the interface or equipment to which the Stage 3standard applies.
6.2.2Normal procedures
6.2.2.1 Activation/deactivation/registrationAinterrogation
ss-AOC-S shall be activated on provision, and deactivated on withdrawal.ss-AOC-s requires no registration, and interrogation is not applicable.6.2.2.2 Invocation and operation
If SS-AOC-S is provided on a per call basis, the user shall be able to invoke this service when originating a call or at any timeduring a call.
If SS-AOC-S is invoked for all charged calls automatically or if the served user invokes it when originating a call, the charginginformation shall be provided by the PISN during call establishment. This can occur, at the latest,when the calling user isinformed that the called user has accepted the call.
lf the served user invokes SS-AOC-s after originating a call, but prior to release of the call, the charging information shall beprovided by the PISN as soon as possible after this invocation.
When there is a change in the charging rate during a call for which SS-AOC-S has been successfully invoked, the PISN shallsend information about the new charging rate to be applied for the remainder of the call.
lf a call for which SS-AOC-S has been successfully invoked is free of charge, or becomes free of charge during the active phasefor the remainder of the call (e.g. in case of reverse charging), the specific rate “free of charge” shall be given.
lf a call for which SS-AOC-S has been successfully invoked becomes free of charge for the user during the active phase for thewhole call (i.e. from the beginning of the active phase of the call), the specific rate “free of charge from the beginning” shall begiven.
The structure, contents and application of charging information are given in annex A.