Protocols in relation to the OSI model
Session Network Data link Physical H2:H.323 Protocols in relation to the OSI model G.711 G.722 G.728 G.729 G.723.1.1 Presentation H.261 H.263 T.127 T.126 T.124 T.125/T.1222 RICP RAS RIP H.450.1 H.450.3 H.450.2 X.244.0 H.245 H.225 H.235 UDB TCP Audio signal Application Video signal Data signal Transport supplementary Services Control