22.0863GPPAdvice of Charge (AoC) supplementary servicesStage 1TS
This service permits MS to display an accurate estimate the size of the bill which will eventually be levied in the Home PLMN.
This supplementary service provides the MS with the information to produce an estimate of the cost of the service used. Charges are indicated for the call(s) in progress when mobile originated or for the roaming leg only when mobile terminated. Any charges for non-call related transactions, and for certain supplementary services, such as Call Forwarding are not indicated.
The MS will receive at the beginning of each call (and as necessary during the call) a message, the Charge Advice Information. This message contains the elements which together define the rate at which the call is to be charged, time dependence, data dependence and for unit increments – see TS 22.024 .
The MS shall still indicate appropriate charges even when roaming, based on Home PLMN units.
Where applicable, the volume charge for Packet data service, in addition to the normal time dependent and incremental charges, shall be indicated.
To indicate the charge per call the Mobile station shall display the units consumed so far during the present call(s) and maintain this value until the MS is switched off or a new call set-up is attempted.
Where required to indicate the total accumulated charge, the MS shall be able to display, and the SIM/USIM shall store in the ACM, the running cumulative unit charge. This value must be stored securely, and all reasonable steps shall be taken to ensure that the written value cannot be interrupted, reset or corrupted (except resetting under control of the unblocking key).
1.2.2 Applicability to telecommunication services
The applicability of this supplementary service is defined in TS 22.004 .
1.3 Normal procedures with successful outcome
This supplementary service will be provided after prearrangement with the service provider.
This service will be withdrawn at the subscriber’s request or for administrative reasons.
This supplementary service will be activated by the service provider as a result of provision.
This supplementary service will be deactivated by the service provider as a result of withdrawal.
This supplementary service will be automatically invoked by the network for the use of all applicable telecommunications services.
1.3.8 Normal operation with successful outcome
For every applicable usage of telecommunications services, the served MS will be provided with charging information.
The MS shall send to the network a confirmation of receipt of this information.
1.4 Exceptional procedures or unsuccessful outcome
1.4.1 Operation in a PLMN that is unable to support AoC
Since AoC (Information) is used only to provide an indication to the user, even if the network is unable to support AoC, calls may still be set up as normal, only the AoC indication will not be given. For this reason charges incurred on a network that is unable to support AoC will not be shown on the AoC indicator.
1.4.2 AoC when MS is switched off or out of coverage
No AoC information is given by the network.
1.4.3 Operation with a MS unable to support AoC
Since AoC (Information) is used only to provide an indication to the user, even if the ME is unable to support AoC, calls may still be set up as normal, only no AoC information will be provided to the user.
1.5 Alternate procedures
1.6 Interactions with other supplementary services
When the MS requires a bearer change, e.g. from Audio to Video or vice versa, the SCUDIF Mode modify procedure is performed as described in TS 23.172 . Depending on the operator’s policy, the success of the procedure may trigger a Facility message to convey new values for the CAI parameters. On receipt of new CAI values triggered by a service change based on the SCUDIF supplementary service, the MS shall reset CDUR and continue incrementing the CCM using the new CAI parameters. The MS shall add initial units to the CCM and measure units on a time basis using the new values.
1.6.2 Other supplementary services
Invocation of this supplementary service does not prevent use of any other Supplementary Service.
See TS 22.135 .
1.7 Interworking considerations
When interworking with PSPDN, a volume related charge may be incurred, as described in TS 22.024 .