A WIRELESS COMMUNICATION SYSTEM COMPRISING A DUAL MODE TETRA COMMUNICATION APPARATUS

摘要

A TETRA communications apparatus, comprising: a first TETRA communications device, operable to establish a first communications link in an ETSI standard TETRA direct mode or trunked mode with a respective other device or devices; a second TETRA communications device, operable to establish a second communications link in an ETSI standard TETRA direct mode or trunked mode with a respective other device or devices; a data link connecting the first and second TETRA communications devices to transport TETRA user plane message data and control information between the first and second TETRA communications devices; and control means for operating the first and second TETRA communications devices to transport said user plane message data and control information between said first and second TETRA communications devices via the data link.