| 单词 | Figure A-3 |
| 释义 | Figure A-3 The AIN architecture, as illustrated in Figure A-3, requires Common Channel Signaling System 7 (SS7). In addition to SS7, AIN comprises the following components: • Service Switching Points (SSPs): PSTN switches that act on the instructions dictated by AIN centralized databases. SSPs can be end offices or tandem switches. • Signal Transfer Points (STPs): Packet switches that route signaling and control messages between SSPs and SCPs, and between STPs. • Service Control Points (SCPs): Nodes that contain all customer information in databases residing in centralized network servers. SCPs provide routing and other instructions to SSPs. • Service Management Systems (SMSs): Network control interfaces that enable the service provider to vary the parameters of the AIN services. Under certain circumstances, the user organization may be provided access to a partition of the SMS. • Adjunct Processors (APs): Decentralized SCPs that support service offerings limited either to a single SSP or to a regional subset of SSPs. APs might support routing tables or authorization schemes specific to a single switch or regional subset of switches. • Intelligent Peripherals (IPs): Nodes that enhance the delivery of certain services by offloading processing demands from the SCPs and providing a basic set of services to the SCPs.The role of the IP typically includes collection of digits, collection and playing of voice prompts, collection of voice responses and their conversion to digits, menu services, and database lookups. 74570c01.qxd 9/12/07 12:34 AM Page 28 |
| 随便看 |
|
科学参考收录了5291条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。