ISO/IEC 29341-26-3:2017

ISO/IEC 29341-26-3:2017 defines a device type named TelephonyServer that complies with [1].
The TelephonyServer device is a UPnP device that allows control points to exploit a set of telephony features such as managing telephony calls, messaging, presence etc via UPnP though other UPnP enabled home network devices. This device provides control points with the following functionality:
-           Managing telephony calls including initiation of a call, rejection of a call, acceptance and mofications of a call.
-           Messaging features including sending and retrieving messages and notifications of incoming messages.
-           Enabling user friendly input capability.
-           Configuring of the Telephony Server via phone data model.