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本文件规定了基于ISDN保持(HOLD)补充业务阶段一和阶段二的阶段三协议描述。在下一代网络(NGN)中,阶段3描述基于会话发起协议(SIP)和会话描述协议(SDP)的IP多媒体呼叫控制协议进行指定。
| 术语 | |
|---|---|
| ACR/CB | Anonymous Communication Rejection and Communication Barring |
| AS | SIP Application Server |
| CDIV | Communication DIVersion |
| CSCF | Call Session Control Function |
| ECT | Explicit Communication Transfer |
| HOLD | communication session HOLD |
| IBCF | Interconnect Border Control Function |
| I-CSCF | Interrogation-CSCF |
| IMS | IP Multimedia Subsystem |
| IP | Internet Protocol |
| ISDN | Integrated Service Data Network |
| MCID | Malicious Communication IDentification |
| NGN | Next Generation Network |
| OIP | Originating Identification Presentation |
| OIR | Originating Identification Restriction |
| P-CSCF | Proxy-CSCF |
| PSTN | Public Switched Telephone Network |
| S-CSCF | Serving-CSCF |
| SDP | Session Description Protocol |
| SIP | Session Initiation Protocol |
| TIP | Terminating Identification Presentation |
| TIR | Terminating Identification Restriction |
| UE | User Equipment |
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