Transmission method and a cellular radio system

摘要

The invention relates to a transmission method and a cellular radio system comprising a base station and a vocoder which communicate with each other via a transmission path and which transmit a signal to each other. The vocoder receives a signal and encodes the received signal which at least partly consists of spare bits. The cellular radio system comprises a filtering means for filtering spare bits off the signal prior to transmitting the signal to the transmission path. The filtering of the spare bits makes it possible to save the transmission path capacity for other uses.