Hi, Is there anybody who can possibly help me with the bit-structure of the preambles for the H245 messages: openLogicalChannel terminalCapabilitySet Thank you very much Louw Louw Jansen van Rensburg School for Electrical & Electronic Engineering Potchefstroom University for Christian Higher Education Potchefstroom South Africa Tel:+27 (0) 18 299 1961 Cel: 082 782 1373 Fax:+27 (0)18 299 1977 e-mail: [EMAIL PROTECTED]