Speaker phone installation for use in car either with portable or car-fixed mobile telephone, comprises data exchange unit with control module for connection of navigation module to mobile telephone

摘要

The installation comprises a data exchange unit with a navigation module (110) receiving radio signals of a navigation system and determining a position from the signals. There is a junction (154,155) for issuing position information. The data exchange unit contains a control module with instruction converter (120) for connection of the navigation module to the mobile telephone (11) such that the determined position information can be transmitted to an opposite position via the mobile telephone.