METHOD AND DEVICE FOR TRANSMITTING DATA ON A SPEECH CHANNEL

摘要

The invention relates to a method for transmitting data on a speech channel of a mobile telephone, whereby said data is transmitted between a radiotelephone terminal provided with a type of source coding and a data send/and or receive unit via a mobile telephone network supporting at least one transcoding-free mode of communication which can be established between two mobile telephones having at least one type of common source coding. During negotiation of the communication mode between the radiotelephone terminal and the send and/or receive unit, the send and/or receive unit sends one type of source coding available from the terminal to said terminal in order to engage said transcoding-free mode of communication.