Dual-function removable reversable unit for radio and telephone

The present invention provides for a modular communication system to be installed in a motor vehicle. The communication system in accordance with the teachings of the present invention includes a base unit and a removable unit. The base unit is provided with a cavity to insert the removable unit. The communication system is rendered inoperable when the removable unit is removed from the base unit. The removable unit is provided with two surfaces that perform different function. In particular when the removable unit is inserted into the base unit and the first surface is exposed then the communication system operates as a radio player. The removable unit is capable of being reversed such that second surface is exposed, then the communication system operates as a telephone unit.