Abstract: A telecommunications system has a plurality of mutually independent clients each having a plurality of terminal devices connecting to the telecommunication system and provided in groups. A client specific identification KID and a group specific identification ZID are assigned. A dispatcher number storage can serve to assign the KID and ZID from an E.164 incoming call for routing purposes and to determine whether calls will be executed internally or externally.

Abstract: A telecommunication system has a multiplicity of clients each with a multiplicity of subscribers connected by an access device to a long-distance network with a telecommunication apparatus for exchange (PDX). According to the invention between that network and the access device a wireless stretch is formed which can include a satellite link, a UMTS link, a WLAM link or WMAN link.

Abstract: Telecommunication system based on IP technology, comprising a primary media gateway (1), at least one secondary media gateway (2, 3) to be synchronized onto the primary media gateway (1), and several radio base stations (4-10), at each secondary media gateway (2, 3), at least one radio base station (5, 9) connected to it being provided with a device with which the radio base station (5, 9) can be synchronized onto the emission of another radio base station (4, 8) in order to regenerate the system clock and to transmit it to the connected secondary media gateway (2, 3), and each secondary media gateway (2, 3) being provided with at least one connection for a radio base station (5, 9), through which the regenerated clock can be received and used for controlling the internal clock of the secondary media gateway (2, 3).

Abstract: Transmission resource allocation by a central station (ZE) for control of data flow of terminals (T1, T2, . . . ) of a centrally controlled communication system is performed in the terminals (T1, T2, . . . ). A concerned terminal (T1, T2, . . . ) independently decides whether it might only need reduced transmission resource capacity. The decision regarding this reduction in needed transmission capacity is transmitted to the central station, so that it can distribute the unneeded transmission capacity to the remaining terminals.