ISO/IEC 29341-26-2:2017定义了一种名为TelephonyClient的设备类型，它符合[1]
TelephonyClient设备是一种UPnP设备，允许控制点通过其他支持UPnP的家庭网络设备，利用一组电话功能，例如通过UPnP管理与电话服务器的媒体会话、消息传递、状态等。此设备提供具有以下功能的控制点:
-管理与电话服务器的媒体会话，包括设置和终止与电话服务器的媒体会话
-消息功能包括发送和检索消息以及传入消息的通知
-支持用户友好的输入功能。

ISO/IEC 29341-26-2:2017 defines a device type named TelephonyClient, that complies with [1].
The TelephonyClient device is a UPnP device that allows control points to exploit a set of telephony features such as management of media session with a telephony server, messaging, presence etc via UPnP though other UPnP enabled home network devices. This device provides control points with the following functionality:
- Managing media session with a telephony server including setting up and terminating of media session with a telephony server.
- Messaging features including sending and retrieving messages and notifications of incoming messages.
- Enabling user friendly input capability.