Polycom SoundStructure C16 Design Manual page 396

If the system requires authentication but has not yet been authenticated, any API command sent to the
SoundStructure system that is not on the white-list (see below) will respond with:
error: "authentication required for control"
When authentication is enabled, connections to port 52774 are not allowed.
If authentication is not enabled, then a control system should connect over port 52774 and send commands
and receive command acknowledgments over port 52774.
Discovering SoundStructure Devices
When a system is in the open mode, i.e., not authenticated, earlier versions of SoundStructure Studio can
discover the SoundStructure system.
When a system is authenticated, earlier versions of SoundStructure Studio will not be able to discover the
SoundStructure system.
Supporting SoundStructure Command White-list
SoundStructure system firmware version 1.6 supports a white-list of read-only SoundStructure parameters
that may be queried from a SoundStructure system, without authentication, even when the system requires
authentication. The white-list commands make it possible to check the status of an authenticated
SoundStructure system but not change any settings, without authentication. The white-list commands are
desired to allow discovery by SoundStructure Studio and to enabling monitoring applications of
SoundStructure systems.
Note: White-List Commands Sent over TCP Port 52775
When authentication is enabled on a SoundStructure system, white-list commands
must be sent over TCP port 52775 and the SoundStructure system will respond
with command acknowledgments over port 52775. Connections to port 52774 are
not supported when authentication is enabled on the SoundStructure system.
The white-list commands are shown in the following table.
White-List of Commands
White-list Parameter Names
clink_num_attached
dev_type
dev_habanero_ver
dev_hw_rev
dev_uptime
dev_temp_status
dev_volt_neg_15
dev_volt_pos_15
eth_mac
Polycom, Inc.
dev_status
dev_firmware_ver
dev_hw_eco
dev_plugin_type
dev_temp
dev_volt_clink
dev_volt_phantom
eth_auth_mode
eth_settings
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