Sony DSBK-200 Manuel D'installation page 16

Installation
Using the remote control panel
Power on the DSR-2000/2000P, and in the subsidiary control
panel, set the CONTROL PANEL switch to EXT. This lights
the ON LINE indicator of the remote control panel, indicating
that it is ready for use.
If you set extension menu item 117 on the DSR-2000/2000P to
PARA, you can use both this remote control panel and the
DSR-2000/2000P control panel.
For more information about this, refer to the Operating
Instructions for the DSR-2000/2000P.
16