Dear CISCO Community,H.323 Connection from MXP 6000 (F9.1 PAL) <-> MXP 3000 (F7.4 PAL) works fine, but when MXP 3000 start H.239 -> On Site MXP 6000 they see only a black picture. With remote control you stop Presentation. If now MXP 6000 send H.239...