Digital mobile radio network station with speech signal exchange means and data signal exchange means

Claim 1

Mobile station of a digital mobile radio network for exchanging speech signals and data signals comprising: connection means to a first data processing terminal equipment for bidirectional exchange of data according to a first data exchange standard using a single transfer channel carrying data and commands simultaneously, first means for sending data to and receiving data from a second data processing terminal equipment via said mobile radio network according to a second data exchange standard using a data transfer channel and command transfer channel, second means for sending speech signals to and receiving speech signals from a remote terminal via said mobile radio network according to a third data exchange standard, and means for monitoring a bidirectional call between said mobile station and remote station; wherein said monitoring means comprises: means for selection either said first or said second sending and receiving means according to whether said call carries data or a speech signal, and interface means for converting data signals between said first and second data exchange standards; wherein said interface, in the direction from the first standard towards the second standard, comprises: means for separating data and commands delivered by said first terminal equipment, first transcoding means for transcoding said data delivered by said separating means from said first standard to said second standard and delivering data to be transmitted on said data transfer channel, first sorting means for sorting said commands into two sets of commands, a first set of commands to be transmitted to said second terminal equipment and a second set of commands to be executed by said mobile station, means for interpreting commands of said second set of commands and delivering a second set of interpreted commands, and first means for mapping commands of said first set of commands and delivering commands to be transmitted on said command transfer channel; wherein said interface means, in the direction from the second standard towards the first standard, comprises: second means for sorting command received on said command transfer channel and delivering a third set of commands to be transmitted to said first terminal equipment and a fourth set of commands to be executed by said mobile station, second means for mapping commands of said third set of commands and delivering commands to be transmitted to said first terminal equipment, second means for transcoding data received on said data transfer channel from said second standard to said first standard and delivering data to be transmitted to said first terminal equipment, and means for grouping said commands and said data to be transmitted to said first terminal equipment in order to transmit them over said single transfer channel; and wherein said interface means further comprises means for supervising said call from said second set of interpreted commands and a full set of commands and handling initialization, monitoring of said call.