Virtual Channel Group Summary; Understanding Telephone Virtual Channels; Defining Logic Pins - Polycom SoundStructure C16 Design Manual

Virtual Channel Group Summary

Virtual channel groups are an easy way to create groups of signals that may be controlled together by
sending an API command to the virtual channel group name. It is possible to have more than one virtual
channel group and to have the same virtual channel in multiple virtual channel groups. It is also easy to add
or remove signals from the virtual channel group making virtual channel groups the preferred way of
controlling or configuring multiple virtual channels simultaneously.
Virtual channel groups re defined by SoundStructure Studio during the project design steps using the
vcgdef command described in Appendix A. As an example, a virtual channel group with two members,
Table Mic 1 and Table Mic 2, would be defined as:
vcgdef "Zone 1" "Table Mic 1" "Table Mic 2"

Understanding Telephone Virtual Channels

Telephony virtual channels are created with the telephony inputs and telephony outputs - each direction on
a telephony channel is used to create a virtual channel. There are two types of physical channels used:
pstn_in, and pstn_out, in the definition of telephony virtual channels.
By default, SoundStructure Studio creates virtual channel definitions for both the input and output
commands. The command set in Appendix A shows which commands operate on the telephone output
virtual channels and which operate on the telephony input channels.
For example, the phone_connect and phone_dial commands operate on the telephony output channel
while the phone_dial_tone_gain command operates on the telephone input channel.

Defining Logic Pins

SoundStructure logic input and output pins are also considered physical inputs and outputs that can be
abstracted with control virtual channels and control array virtual channels.
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