account sharing

VP

VP

Actc

Acs

customer

provider

Identity

Payment

Policing

Rating

Accounting

Measure-ment Ctrl

Measure-ment

Access ctrl

I

Mc

Mb

Mp

Po

network

Pac

Po

MCc

MCc

service

provision

control

reconcile

control

feedback

payment

host

Po

Actp

Pap

Rac

Rap

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