Polycom SoundStructure C16 Design Manual page 202

Virtual channels, as introduced in Introducing SoundStructure Design Concepts, provide an abstraction
layer around the physical input and output channels. Virtual channels make it possible to refer to, and
control, signals by their virtual channel names rather than by the physical input and output numbers. Virtual
channels make the system more portable as control system code that is developed can be reused by using
the same virtual channel names across different installations - regardless of how the system is physically
cabled.
As a system is being designed with SoundStructure Studio, the SoundStructure Studio software defines the
virtual channels and then uses the virtual channels with all subsequent operations on those channels.
Polycom, Inc. 202