This Recommendation defines a protocol that supports multipoint application sharing. It uses
services provided by Recommendations T. 122 (MCS) and T. 124 (GCC).
The details of communication with the input and output devices and the user interfaces on the host
terminal are considered out of the scope of this Recommendation and are left to the discretion of the
implementer. Therefore this Recommendation makes no assumption that these input and output
devices and user interfaces are of any specific architecture.
Figure 1 presents an overview of the scope of this Recommendation and its relationship to the other
elements of the T. 120 framework within a single node.