A method of and apparatus for communication of conversational data signals, especially voice signals, between transceiver terminals over a radio link, especially a Bluetooth link, capable of full-duplex transmission of conversational data packets in alternate directions within a pair of time slots. Local conversational activity is detected at each of the terminals and conversational activity signals indicative of the detected local conversational activity are sent to the other terminal. Reception at either terminal is disabled if conversational activity signalling indicates absence of remote conversational activity, and transmission by either terminal is disabled in the absence of local conversational activity, saving power. Audible comfort noise may be generated at the terminal from a locally generated comfort noise signal if reception is disabled in response to the conversational activity signalling indicating absence of remote conversational activity.