Private branch exchange with compound construction features for house external telecommunication terminals

摘要

A device as well as the method is disclosed, in which there is a user of a house external telecommunication device (for example, of the mobile telephone of a yawing, etc.), which is attached to a private branch exchange, to the private branch exchange and thus to specify a desired telephone number in the public telephone network is to call. The private branch exchange then calls up the desired telephone number, wherein they than the number of the calling subscriber of the call an in-house telephone number (for example, the office telephone number of the employees, etc.) transmits. In the exemplary embodiment, the in-house telephone number, which, as the number of the calling subscriber is transmitted, by reference to a table of house external and in-house telephone numbers, which are coupled to one another, determined. In a similar manner, the present invention allows a user of the house external terminal, call connections, and other subscribers in conference circuits, where said called subscriber the corresponding internal house telephone number is supplied.