Patent ID: 7447217

Claim:
A method for establishing a communication connection between calling subscriber stations and subscriber stations to be called, comprising: linking the subscriber stations to switching centers of a first communication network; connecting the switching centers to each other by transition devices through a second communication network; assigning to the transition devices separate control devices, which control connection traffic via the transition devices assigned respectively thereto; and storing in a first of the switching centers for a first subscriber station, which is to be called and which is at the first switching center, call redirection to a second subscriber station at a second of the switching centers; storing during a singling connection to the first subscriber station a first control and/or signaling information element, which comprises a first call numbers of the calling subscriber stations and a second call number of the first subscriber station in the control devices, which are included in the signaling connections; receiving in a first of the control devices a second control and/or signaling information element, which gives information about the second switching center at which the second subscriber station is available, whereby the second control and/or signaling information element is supplied by the first switching center, which is connected to the first control device and at which the first subscriber station was available; in the first control device identifying existence of a call redirection situation from a comparison of the first and second control or signaling information elements; and setting up the communication connection directly to the second switching center from the first control device using the second control and/or signaling information element via the transition device, which connects the second switching center to the second communication network.