User's Manual
54 
VP-770 - Port Tunneling 
9  Port Tunneling 
The port tunneling feature lets you send and receive simple RS-232 signals 
between a controller and a serial device via the VP-770 which is connected to the 
Ethernet and outputs via TP cable. 
The example, illustrated in Figure 33, shows a Kramer room controller that is 
connected to the VP-770 via the Ethernet. The DGKAT OUT connector on the 
VP-770 is connected via TP to a DGKAT receiver. This DGKAT receiver connects to 
a display via HDMI and RS-232. 
Figure 33: Port Tunneling 
The room controller sends RS-232 signals over the Ethernet via a dedicated 
Tunneling port to the VP-770. The VP-770 sends these signals via TP to a display 
that is connected to the receiver. This way, control data can flow between the room 
controller and the display device, tunneling through the VP-770. 










