Siemens Aktiengellschaft

Siemens Aktiengesellschaft

Andreas Knaebchen

Volker Petersen

Rainer Liebhart

In a communication network, which includes a call control level CCL, a resource control level RCL and at least one terminal A assigned to data transfer, a QoS requirement RQ determined for a data transfer is verified at expense at call control level CCL. An encrypted token T is then created from this and transferred via terminal A to resource control level RCL. This latter verifies an incoming QoS requirement RQ from terminal A only by means of the encrypted token T. If successful, the communication network is configured so that the data is transferred with the QoS verified according to the invention. The invention allows the efficient, secure and correct provision of QoS in integrated voice and data networks. In particular extensive modifications to existing routers are avoided at resource control level RCL. The regularly repeated transfer of tokens T also supports consistent termination of the QoS provided and secure and correct billing of the data transfer.

Transfer of information in a communication network with a verified QoS

In a switching system, the subscriber stations of which are linked to a switching centers of a first communication network, which are connected to each other through a second communication network, such as the internet, by means of transition devices, with which separate control devices are associated to control the connection traffic as a function of control and/or signaling information. A communication connection is established to a subscriber station to be called, the availability of which has changed from one switching center to another switching center, by first setting up a signaling connection to the switching center at which the subscriber station to be called was hitherto available, whereupon a communication connection is established using the control and/or signaling information specifying the changed availability of the subscriber station to be called directly to the other switching center at which the subscriber station to be called is now available, via the transition device connecting this switching center to the second communication network.

Method for establishing a communication link between subscriber stations of a switching system which comprises two communication networks

The invention relates to a method for emitting signal when a communication participant is not available on a subscriber station (SUB) of a first partial network (NET), especially a fixed network, associated with a communication network, once a call has arrived that was destined for the respective subscriber station, to a defined station of a second partial network (NET), especially Internet, associated with the mentioned communication network which is linked with the first partial network (NET) via at least one transition device (GW), and wherein communication links from and to a mobile radio device (MOF) associated with the respective communication participant can be established as radio links. According to the invention, a short message signal is transmitted to the defined station of the respective second partial network (NET), via call redirection from the mentioned subscriber station (SUB) to a server (SVR) associated with the second partial network (NET) and by means of an information service defined in said server (SVR), said message comprising at least the subscriber number of the calling subscriber station (SUB).

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Munich, Germany

Andreas Knaebchen