Polycom C16 - Manual (Page 361)

Command Protocol Reference Guide
A - 19
vcgdef [ [ ... ]]
Each of the command arguments is described below.
The argument is a user-defined text argument that defines the name
for the new virtual channel group. If a virtual channel group or virtual
channel already exists with the same label, the SoundStructure device will
respond with an error message.
Zero or more arguments may be specified to initialize the virtual
channel group with virtual channel members. The argument is
a user-defined text argument that defines the name of a virtual channel. If no
virtual channel with the specified name exists, the SoundStructure device will
respond with an error message.
vcgdef Acknowledgement
When a virtual channel group definition command with the vcgdef action is
successfully executed, the SoundStructure device will send an
acknowledgement in the same format as the command. The acknowledgement
will be sent to all control interfaces.
vcgundef Action
The vcgundef action is a virtual channel group definition command that
undefines a virtual channel group that was previously defined with the vcgdef
action. Commands with the vcgundef action have the following syntax.
vcgundef
Each of the command arguments is defined below.
The argument is a user-defined text argument that defines the name of
the virtual channel group to be undefined. If no virtual channel group exists
with the given label, then the SoundStructure device will respond with an
error message.
vcgundef Acknowledgement
When a virtual channel group definition command with the vcgundef action
is successfully executed, the SoundStructure device will send an
acknowledgement in the same format as the command. The acknowledgement
will be sent to all control interfaces.