Abstract: A system, device, and method for traffic and subscriber service differentiation using multiprotocol label switching (MPLS) creates different service tiers, where each service tier is associated with a unique combination of resource class (color) and hold priority. Enhanced MPLS devices separate traffic into separate queues based upon service tier. Standard MPLS devices are typically configured to separate traffic for different service tiers under normal operating conditions. Enhanced MPLS devices signal service tier using a predetermined signaling protocol such as RSVP-TE or CR-LDP.

Abstract: This patent concerns a system and method for detecting a mass calling event in a telephone system and to regulate telephone calls to a call destination for which a mass calling event has been detected where a packet transport network and Call Server is integrated into the Public Switched Telephone Network (PSTN). A packet transport network and a central Call Server implement switching functionality traditionally provided by numerous Time Division Multiplexing (TDM) switches within the PSTN. A credit bucket mechanism is used for call regulation in a mass calling event. The packet network may be based on (but is not limited to) ATM, Frame Relay, or IP packet protocols.

Abstract: A system, device, and method for traffic and subscriber service differentiation using multiprotocol label switching (MPLS) creates different service tiers, where each service tier is associated with a unique combination of resource class (color) and hold priority. Enhanced MPLS devices separate traffic into separate queues based upon service tier. Standard MPLS devices are typically configured to separate traffic for different service tiers under normal operating conditions. Enhanced MPLS devices signal service tier using a predetermined signaling protocol such as RSVP-TE or CR-LDP.

Abstract: A method and system for interfacing a Multi-Protocol Label Switching (MPLS) protocol based network to an Asynchronous Transfer Mode (ATM) network using the Private Network-Network Interface standard and providing routing and signalling interworking between the networks. The system comprises ATM aware Label Switching Routers (LSRs) at the edge of an MPLS network. Each of the ATM aware LSRs run entities according to the PNNI protocol To interconnect the PNNI entities running on the ATM aware LSRs. Abstract trunks are created from groups of CR-LSPs (Constraint-based Routed-Label Switched Paths). The creation of the CR-LSPs is dynamic and Virtual Path Connections (VPCs) and Virtual Channel Connections (VCCs) are transported on the CR-LSPs.