私有综合服务网络（PISN）是一种专用的通信网络，用于在组织内部提供语音和数据通信服务。PISN可以提供多种服务，如电话、传真、电子邮件、文件传输等。PISN的优点是可以提供高质量的通信服务，并且可以根据组织的需求进行定制。

在PISN中，使用64 kbit/s电路模式连接和16 kbit/s子复用可以提高通信效率。64 kbit/s电路模式连接是一种传输速率为64 kbit/s的数字电路，可以用于传输语音和数据。16 kbit/s子复用是一种将64 kbit/s电路分成4个16 kbit/s子信道的技术，可以同时传输4个语音或数据信号。

ISO/IEC 17310:2000标准定义了在PISN中使用64 kbit/s电路模式连接和16 kbit/s子复用的映射功能。该标准规定了如何将64 kbit/s电路分成4个16 kbit/s子信道，并将这些子信道映射到PISN中的虚电路上。该标准还规定了如何在PISN中传输语音和数据信号，并保证传输的质量。

ISO/IEC 17310:2000标准的实现可以提高PISN的通信效率和质量。使用64 kbit/s电路模式连接和16 kbit/s子复用可以同时传输多个语音或数据信号，从而提高了通信效率。同时，该标准还规定了传输质量的要求，可以保证传输的质量。

相关标准
- ISO/IEC 11579-1:1995 Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network -- Inter-exchange signalling protocol -- Part 1: Protocol specification
- ISO/IEC 11579-2:1995 Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network -- Inter-exchange signalling protocol -- Part 2: Protocol implementation conformance statement (PICS) proforma
- ISO/IEC 11579-3:1995 Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network -- Inter-exchange signalling protocol -- Part 3: Abstract test suite (ATS) and protocol implementation extra information for testing (PIXIT)
- ISO/IEC 11579-4:1995 Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network -- Inter-exchange signalling protocol -- Part 4: Protocol implementation extra information for testing (PIXIT) for the support of supplementary services
- ISO/IEC 11579-5:1995 Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network -- Inter-exchange signalling protocol -- Part 5: Protocol implementation conformance statement (PICS) proforma for the support of supplementary services