The meeting calling system and manner null for the radio communication channel

摘要

(57) conference call system to be applied to the [summary] wireless communication channel. The system includes a communication channel participant first communicating via each transmitter and receiver of the third (20) and (20) the first (34), second, the second and third are used it is applied to. The system includes a circuit for receiving encoded (encoded) signal (144) from the transmitter at least one. Determine which participants either away from the encoded signal received (62) the second circuit. (66) is provided in order to re-sent to the other participants, the encoded signal received from the participant that is the story the third circuit. The encoded signal is vocoded at the highest rate in the examples speech, silence is vocoded in eighth rate, variable rate speech volume code used as the rate a transitional quarter rate and 1/2 (vocoded) is a signal. In an embodiment, the signal of the speaker is recognized by detecting the rate of the received vocoded signal. Vocoded signal of the speaker is recognized, the signal is re-sent to the participants in the conference call that are not currently talking without being de vocoded. By retransmitting without having to de-vocoded signal of a speaker, the quality of the received signal is maintained.