Packetizer

Must Transmit DTMF (Q47)


The information in this article applies to: H.323, H.324, H.245

In reference to the UserInputIndication message, 6.2.8/H.323v2: "H.323 terminals shall support the transmission of user input characters 0-9, '*', and '#'. Transmission of other characters is optional." (6.5/H.324v2 says the same thing about H.324 terminals.) In summary, a terminal is required to transmit DTMF characters but not to do anything in particular with them if received.