ISO/IEC 29341-26-2:2017

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.