Patent ID: 7415520

Claim:
A method for setting up a connection with a predetermined Quality of Service from a source network with a source network resource manager to a destination network different from the source network, the destination network having a destination network resource manager, the method comprising: initializing the connection by transmitting both a connection setting-up message and a reservation request in the course of connection setting-up signaling, the connection setting-up message being transmitted from a connection controller in the source network to a connection controller in the destination network, and the reservation request being transmitted from the connection controller in the source network to the source network resource manager; initiating a resource reservation in the source network on the basis of the reservation request; transmitting the reservation request from the source network resource manager toward the destination network resource manager; initiating a resource reservation in the destination network on the basis of the reservation request transmitted from the source network, the resource reservation being initiated by the destination network resource manager; and transmitting reservation information relating to the success of the resource reservation, from the destination network resource manager to the connection controller in the destination network wherein the resource manager of the source network and the resource manager of the destination network both reserve transmission resources of their respective networks on a connection-specific basis and monitor the permanent availability of resources reserved, and the connection controller of the source network and the connection controller of the destination network both perform logical connection control and logical setting-up and clearing down of connections.