Polycom SoundStructure C16 Design Manual page 544

Physical channel type
clink_out
digital_gpio_in
digital_gpio_out
analog_gpio_in
ir_in
<num>
One or more <num> arguments are required to define the global channel index (indices) of the physical
channel(s) in the virtual channel. The <num> argument is an integer argument.
As an example, consider two SoundStructure C16 devices linked via OBAM link. The following command
defines a stereo virtual channel consisting of the last microphone on the first device and the first microphone
of the second device.
vcdef "Stereo Mics" stereo mic_in 16 17
Since this virtual channel type is stereo, an even number of <num> arguments must be specified, otherwise
an error message will be generated.
The following command creates a logic input pin called "logic input" that is on logic pin 1
vcdef "logic input" control digital_gpio_in 1
For mono virtual channels, a single <num> argument must be specified; otherwise an error message will be
generated. For stereo virtual channels, two <num> arguments must be specified; otherwise an error
message will be generated. The first <num> argument corresponds to the left channel, and the second
corresponds to the right channel. For control_array virtual channels more than two <num> arguments
may be specified as in the following example.
vcdef "logic array" control_array digital_gpio_in 2 3 4
which creates a logical group using logic inputs 2, 3, and 4.
To create a channel that can report IR commands:
vcdef "ir receiver" control ir_in 1
This creates the virtual channel name "ir receiver" that will report back any IR key presses that are received
using the standard Polycom IR receiver that has been set to a device ID of 3.
vcdef Acknowledgments
When a virtual channel definition command with the vcdef action is successfully executed, SoundStructure
will send an acknowledgment in the same format as the command. The acknowledgment will be sent to all
interfaces.
As an example, consider two C16 linked via OBAM link, and assume that no virtual channels are defined.
If a control system connected to any of the control interfaces of a SoundStructure device sends the following
command:
vcdef "Stereo Mics" stereo mic_in 16 17
then the following acknowledgment will be generated and sent to all control interfaces.
Polycom, Inc.
Description
The physical channel is one of the ConferenceLink outputs.
The physical channel for the digital logic input pins
The physical channel for the digital logic output pins
The physical channel for the analog logic input pins
The physical channel for the infrared remote control port
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