Alam H.224/H.281 is designed to send instructions to the far end it has no actual camera control. You have to control the local camera's PTZ but your own mechanism. Simon -----Original Message----- From: h323plus-bounces@lists.packetizer.com [mailto:h323plus-bounces@lists.packetizer.com]On Behalf Of mohammad alam Sent: Tuesday, April 29, 2008 2:54 PM To: H323plus Subject: [h323plus] H.224/H.281 Functionality Simon Can I control local camera's Pan, Tilt, Zoom functionality using H.224/H.281. Thanks Alam