| 摘要 |
PURPOSE:To attain voice communication or the like without interrupting current data communication even when a request from a different kind of medium such as voice communication or facsimile communication takes place during high speed data communication is being conducted by using, e.g. two slots. CONSTITUTION:The MCA system comprising a relay station 1, plural control stations 2a, 2b, and mobile stations 3a, 3b subscribing to each of the plural control stations to form a subscriber group and making communication between the control stations in the subscriber groups 6a, 6b or the mobile stations via a relay station is provided with a terminal equipment receiving/sending transmission data, a speaker and a microphone having a voice speech request switch, a control section outputting a voice signal received from the speaker and the microphone while being interposed into transmission data received from the terminal equipment when the plural slots are used for communication and a voice speech request is made from the speaker and the microphone and a radio section sending/receiving the transmission data while being set on the transmission reception channel allocated by the relay station 1 via an antenna to/from the relay station 1. |
