1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 ) BTELECOMMUNICATION (03/93)STANDARDIZATION SECTOROF ITU).4%2!4%$G0G03%26)#%3G0G0$)4!,.%47/2+G0G0 )3$.G93%26)#%G0G0#!0!“),)4)%33500,%-%.4!29G0G03%26)#%3G0G0).G0G0)3$.!$6)#%G0G0/ optional: type of charging unit (see Note 3). Recorded number of currency uni
2、tsThis information indicates the number of currency units incurred for the call. Sub-units shall be: currency identifier; currency amount integer value and a multiplier (see Note 4). Free of chargeThis information indicates that there is no charge to the served user for this call.2 Recommendation I.
3、256.2b (03/93) Not availableThis information indicates that the recorded charges are not available. The network is not required togive a reason.NOTE 3 Type of charging unit shall be indicated by an integer value between 1 and 16. Each serviceprovider shall specify their use and significance of these
4、 values.NOTE 4 The multiplier shall have one of the following values: 0.001, 0.01, 0.1, 1, 10, 100 or 1000.3) Billing identificationOnly one of the following types of billing identification shall be included. Normal chargingThis billing identification indicates that charges are incurred due to norma
5、l charging. Reverse chargingThis billing identification indicates that charges are incurred due to reverse charging. Credit card chargingThis billing identification indicates that charges apply to a credit card.2.2 Application of charging informationCharging information shall be given either in curr
6、ency units or in charging units.“Sub-total charges” can be given in charging units or in currency units, or the value “free of charge” or “not available”can be given to the served user. The charged items that affect the charging applied for the call should be covered.“Total charges” can be given in
7、charging units or in currency units, or the value “free of charge” or “not available” canbe given to the served user. The information indicates the recorded charges for the call. The information shall only begiven to a served user involved in the call when the call is terminated, and the same charge
8、d items covered by “sub-totalcharges” shall be included. The information can be accompanied by a billing identification. If the “billing identification”is not included, the default value shall be interpreted as “normal charging”.2.3 Specific terminologyFor the purposes of this Recommendation, the fo
9、llowing definition applies.served user: The user of a particular ISDN number who is requesting that charging information shall be provided.AOC-D: Advice of Charge: charging information during the call.2.4 Qualifications on applicability to telecommunication servicesThis supplementary service is appl
10、icable to all circuit switched telecommunication services.3 Procedures3.1 Provision/withdrawalThe AOC-D supplementary service shall either be provided on a subscription basis or be generally available. TheAOC-D supplementary service can be offered with one subscription option. Only one value can be
11、selected.Subscription option ValueActivation For all calls automaticallyOn a per call basisRecommendation I.256.2b (03/93) 3NOTE If the AOC-D supplementary service is generally available, the value “on a per call basis” should be used as adefault in order to protect the network from overload.Withdra
12、wal shall be at subscriber request or for administrative reasons.3.2 Normal procedures3.2.1 Activation/deactivation/registrationActivation of the AOC-D supplementary service shall either occur for all calls at provision, or it shall be possible toactivate the supplementary service on a per call basi
13、s. The activation on a per call basis shall occur at call request.3.2.2 Invocation and operationThe network shall transfer charging information to the served user when an appropriate cost increment occurs. The rateof sending information can be limited such that information shall not be sent more fre
14、quently than every t seconds,i.e. information shall be sent every t seconds, or when the increment occurs whichever is latter. The value of t shall bea network option.If the call is free of charge to the served user, this shall be indicated at the start of the call. If the call becomes free ofcharge
15、 to the served user during the call, the free of charge indication can be given at that time. The free of chargeindication shall not be periodically repeated (exceptional case, see the interaction with the terminal portabilitysupplementary service).When the call is terminated, the overall charge for
16、 the call, even if this was a free call, shall be sent to the served user.3.3 Exceptional procedures3.3.1 Activation/deactivation/registrationNot applicable.3.3.2 Invocation and operationIf the charging information related to a call is not available, this shall be indicated once at the start of the
17、call andshall not be periodically repeated (exceptional case, see interaction with terminal portability).3.4 Alternative proceduresNone identified.4 Network capabilities for chargingThis Recommendation does not cover charging principles. Future Recommendations in the D-Series are expected tocontain
18、that information.It shall be possible to charge the subscriber accurately for the service.5 Interworking requirementsThe AOC-D supplementary service shall be supported across the internetwork interface between ISDNs (i.e. public orprivate).6 Interactions with other supplementary services6.1 Call Wai
19、tingNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.4 Recommendation I.256.2b (03/93)6.2 Call TransferIf a call is transferred, the taransferring user is no longer involved in the call and therefore shall receive no information.6.3 Connected Lin
20、e Identification PresentationNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.4 Connected Line Identification RestrictionNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.5 Calling Line Ide
21、ntification PresentationNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.6 Calling Line Identification RestrictionNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.7 Closed User GroupNo imp
22、act, i.e. neither supplementary service affects the operation of the other supplementary service.6.8 Conference callinga) Conference controller1) Invocation of the conference, add-on supplementary service from the idle stateIf the conference controller activates the AOC-D supplementary service at th
23、e same time theconference, add-on supplementary service is invoked, then cumulative charging information shall begiven for the whole conference (only a single charge advice indicating the sub-total for all theconferees) until the entire conference is terminated.2) Invocation of the conference, add-o
24、n supplementary service from an active callIf the AOC-D supplementary service has been activated for the initial call, cumulative charging shallbe given for this call until the conference, add-on supplementary service is invoked. After theconference, add-on supplementary service has been invoked, cu
25、mulative charging information shallbe given for the whole conference as indicated under item 1) above, but including the charges for theinitial call until invocation of the conference, add-on supplementary service.If the AOC-D supplementary service has not been activated for the initial call, then t
26、he conferencecontroller can activate the AOC-D supplementary service at the same time the conference, add-onsupplementary service is invoked. If this occurs, then cumulative charging information shall be givenfor the whole conference as indicated under item 1) above.3) Addition of a call to a confer
27、enceFor calls between the conference controller and potential conferees which are outside the conferencecall, the normal procedures for the AOC-D supplementary service shall apply. When a call for whichAOC-D supplementary service has been activated, is added to the conference, then charginginformati
28、on shall be given as if the call was terminated at the moment it is added to the conference.NOTE 1 Further charging resulting from communication with the new conferee shall be considered to bepart of the charging for the conference.Recommendation I.256.2b (03/93) 54) Creating a private communication
29、 with one of the partiesIn this case the private communication shall be considered as a new call between the conferencecontroller and the individual party. If the AOC-D supplementary service is active for the conference,it shall in addition be automatically activated for the new call when the privat
30、e communication isestablished.Cumulative charging information shall be given as if the conference controller had set-up a new callwhich was accepted by the other party at the moment the private communication is established.5) Terminating the conferenceWhen the conference is terminated and AOC-D supp
31、lementary service had been activated for theconference, then the overall charges for the conference shall be sent to the conference controller. Ifthe conference, add-on supplementary service was invoked from an active call and AOC-Dsupplementary service was activated for that call, then the charging
32、 information shall include chargesfor the initial call.6) Other operation on the conferenceNo impact, i.e. neither supplementary service shall affect the operation of the other supplementaryservice.NOTE 2 Some networks may not support the AOC-D supplementary service in conjunction with theconference
33、, add-on supplementary service, or may only give partial information, e.g. due to off-line processingof the charges associated to the conference, add-on supplementary service. In this case an indication that theAOC-D supplementary service is not available shall be given on invocation of the conferen
34、ce, add-onsupplementary service if the AOC-D supplementary service is activated.b) ConfereesNo impact, i.e. neither supplementary service shall affect the operation of the other supplementaryservice.6.9 Direct dialling-inNo impact, i.e. neither supplementary service affects the operation of the othe
35、r supplementary service.6.10 Call Diversion6.10.1 Call forwarding busy Original calling user: No impact, i.e. neither supplementary service affects the operation of the othersupplementary service. Forwarding user: The call is set-up by the network and the forwarding user is not involved in the call
36、sono information shall be given. The user may use the supplementary service AOC: charging information atthe end of the call.6.10.2 Call forwarding no reply Original calling user: No impact, i.e. neither supplementary service affects the operation of the othersupplementary service. Forwarding user: T
37、he call is set-up by the network and the forwarding user is not involved in the call sono information shall be given. The user may use the supplementary service AOC: charging information atthe end of the call.6.10.3 Call forwarding unconditional Original calling user: No impact, i.e. neither supplem
38、entary service affects the operation of the othersupplementary service. Forwarding user: The call is set-up by the network and the forwarding user is not involved in the call sono information shall be given. The user may use the supplementary service AOC: charging information atthe end of the call.6
39、 Recommendation I.256.2b (03/93)6.10.4 Call deflection Original calling user: No impact, i.e. neither supplementary service shall affect the operation of the othersupplementary service. Deflecting user: When a call is deflected and the deflecting user is charged for the deflected part of thecall, th
40、e charging information is not given to the deflecting user.6.11 Line huntingNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.12 Three-party Charges for the different connections within the three-party supplementary service: Charging information
41、shall be given for each call for which the AOC-D supplementary service has been activated. Charges for the use of the three-party supplementary service: As a network option, the charginginformation can be sent to the served user.NOTE However, in some networks no charging information can be given in
42、this case, e.g. due to off-line processing ofthe charges.6.13 User-to-user signallingNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.14 Multiple subscriber numberNo impact, i.e. neither supplementary service affects the operation of the other
43、supplementary service.6.15 Call holdNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.16 Advice of charge6.16.1 AOC, charging information at call set-up timeNo impact, i.e. neither supplementary service affects the operation of the other supplem
44、entary service.6.16.2 AOC, charging information during the callNot applicable.6.16.3 AOC, charging information at the end of the callIf both the AOC-D supplementary service and the advice of charge: charging information at the end of the callsupplementary service are activated, then when the call is
45、 terminated, only the information related to the advice ofcharge: charging information at the end of the call supplementary service shall be given.6.17 Multi-level precedence and preemptionNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.18 Pri
46、orityNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.19 Malicious call identificationNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.Recommendation I.256.2b (03/93) 76.20 Outgoing call bar
47、ringNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.6.21 Reverse charging Reverse charging cases A and D: When reverse charging has been accepted by the called user, advice ofcharge may be given to the called user for this call. The calling user
48、 should be given a “free of charge”indication. Reverse charging case B: When reverse charging has been accepted by the called user, advice of chargemay be given to the called user for the rest of the call. Reverse charging case C: If the charges incurred before the acceptance of reverse charging by
49、the calleduser cannot be included in the charging information given to this user, then an indication that the AOC-Dsupplementary service is not available shall be given to the called user at the time the reverse charging isaccepted.NOTE Advice of charge information can only be provided to a called user when this user has the value for the activationsubscription option set to “for all calls automatically”.6.22 Sub-addressingNo impact, i.e. neither supplementary service affects the operation of the other supplementary service.7 Dynamic d
