Abstract: The invention relates to a communication network, comprising a call control level (CCL), a resource control level (RCL) and at least one endpoint (A), associated with an information transfer, whereby a request (RQ) for a quality of service (QoS), determined for an information transfer is only exhaustively verified at the call control level (CCL). Subsequently, an encoded token (T) is formed and transmitted to the resource control level (RCL) by means of the endpoint (A). The above verifies a QoS request (RQ) coming from the endpoint (A), merely by means of the decoded token (T). Where successful the communication network is configured such that information with the QoS verified as above is transmitted. The invention permits an efficient secure and accurate provision of QoS in integrated speech and data networks. In particular extensive modifications to existing routers in the resource control level (RCL) are avoided.

Abstract: The invention relates to a method for emitting signal when a communication participant is not available on a subscriber station (SUB2) of a first partial network (NET1), 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 (NET2), especially Internet, associated with the mentioned communication network which is linked with the first partial network (NET1) 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.