ISO/IEC 19459:2001
Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Single Step Call Transfer Supplementary Service
发布时间：2001-05-10 实施时间：


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通信服务。PISN可以提供多种通信服务，如语音通信、数据传输、传真等。单步呼叫转移是PISN中的一种补充业务，它允许用户在通话过程中将呼叫转移到另一个终端设备上。

ISO/IEC 19459:2001标准规定了单步呼叫转移补充业务的功能模型和信息流。该标准定义了单步呼叫转移的各种情况和操作，包括呼叫转移的启动、呼叫转移的目标终端设备的选择、呼叫转移的完成等。此外，该标准还规定了单步呼叫转移补充业务的相关参数和信令。

ISO/IEC 19459:2001标准的实现可以提高PISN的通信效率和灵活性。通过单步呼叫转移补充业务，用户可以在通话过程中将呼叫转移到另一个终端设备上，从而实现更加便捷的通信。此外，该标准还可以为PISN的管理和维护提供支持，使得PISN的运营更加高效和可靠。

相关标准
ISO/IEC 11579-1:1993 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Part 1: Protocol specification
ISO/IEC 11579-2:1993 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 11579-3:1993 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 11579-4:1993 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)
ISO/IEC 11579-5:1993 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Part 5: Protocol implementation conformance statement (PICS) proforma - General information