Importance

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Abstract

A mobile telecommunication system, which transmits a sound signal from a first mobile telecommunication terminal to a second mobile telecommunication terminal over a channel with a predetermined number of bits, includes a first base station to which the first mobile telecommunication terminal and a third terminal which transmits a non-sound signal are connected, and a second base station which is connected to the first base station via a digital network. The second mobile telecommunication terminal is connected to the second base station. The first mobile telecommunication terminal includes a unit which codes and compresses the sound signal to convert the sound signal into a compressed sound signal, and a unit which transmits an answer signal in response to receiving a notice signal which informs that the second mobile telecommunication terminal is the mobile telecommunication terminal. Upon receiving the answer signal from the first mobile telecommunication terminal, the first base station transmits the compressed sound signal and the non-sound signal to the second base station via the digital network by assigning the compressed sound signal to several bits of the channel and assigning the non-sound signal to remaining bits of the channel.

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First Claim