Hello Guys! 

I ask an assistance for the following setup. I have Beosystem 4 + Beovision 4-50 type 8971 with DVI Module In Slot 1.

I've connected Plasma to Beosystem 4 using DVI - HDMI cable. And made RS-232 to RJ-45 control cable using wiring pins for Panasonic Plasma Panel. 

Beosystem 4 works perfectly (Sounds good and i have a picture with other 3rd party TV) but can't control 4-50 (on/off and DVI1 Slot Activation) 

Please, help!