该体系主要采用两种计费机制：离线计费和在线计费。
The system is mainly used two billing mechanism: offline billing and online billing.
最后，用一个具体的测试用例，验证了CSCF的离线计费和在线计费能力。
Finally, a test case is made to prove CSCF abilities of both offline and online charging.
最后，用一个具体的测试用例，验证了CSCF的离线计费和在线计费能力。
Finally, a test case is made to prove CSCF abilities of both offline and online charging.
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