本技术报告的目的是调查专用综合业务网（PISN）和 互联网协议（IP）网络，以确定可能的互操作场景，必须解决的问题 如果要进一步研究特定场景，以及未来可能在该领域开展的标准化活动，则解决该问题。特别地， 研究了互操作性的以下方面: ？PISNs和IP网络通过网关互通； ？通过IP网络连接PISN组件。 对于上述每个方面，考虑的方面包括体系结构、寻址（包括IP寻址的使用）、服务、协议、， 安全、服务质量和流动性。这是在领先的语音和多媒体标准的背景下进行的 IP网络上的通信，包括ITU-T建议H.323、IETF会话启动协议（SIP）和ITU-T 建议H.248。 本技术报告可能产生的未来标准化活动可能包括与IP网络相关的工作项 以及与PISN相关的工作项，以及专门与互操作性相关的工作项。 PISNs中的主要流量是语音，因此本技术报告侧重于语音的互操作性考虑 交通然而，在IP网络中支持语音的许多标准也适用于多用户- 媒体流量（例如:。， 语音、视频和数据）。虽然在许多方面与语音类似，但传真流量的要求略有不同，而且并不相同 在本技术报告中明确考虑。这可能是进一步研究的主题。

The purpose of this Technical Report is to investigate the interoperability of Private Integrated Services Networks (PISNs) and Internet Protocol (IP) networks, with a view to identifying possible scenarios for interoperation, problems that will have to be solved if particular scenarios are to be pursued further, and possible future standardization activities in this area. In particular, the following aspects of interoperability are investigated:   the interworking of PISNs and IP networks via a gateway;   the connection of PISN components via IP networks. For each of the above, aspects considered include architecture, addressing (including use of IP addressing), services, protocols, security, quality of service and mobility. This is conducted within the context of leading standards for voice and multimedia communication over IP networks, including ITU-T recommendation H.323, IETF Session Initiation Protocol (SIP) and ITU-T recommendation H.248. Possible future standardization activities resulting from this Technical Report can include work items relating to IP networks and work items relating to PISNs, as well as work items concerned specifically with interoperability. The dominant traffic in PISNs is voice, and therefore this Technical Report focuses on interoperability considerations for voice traffic. However, many of the standards that support voice in an IP network are also applicable to multi-media traffic (e.g., voice, video and data). Although in many respects similar to voice, fax traffic has slightly different requirements and is not explicitly considered in this Technical Report. It could be the subject of further study.