摘要:
A system and method for using an IP client attached to the Public Internet, acting as a virtual mobile terminal such as a cell phone, to have full access to mobile telephony services offered by a mobile operator using a SIP2 Mobile gateway. The services include a mobile telephone number, capabilities of sending and receiving short messages and mobile intelligent services such as prepaid billing, number translation, and ring back tones.
摘要:
This invention provides for a technique for selectively off-loading traffic from congested sub-regions of a network to more lightly-loaded regions by making use of Multiprotocol Label Switching (MPLS). For each network element, an Interior Gateway Protocol (IGP) routing is employed to provide re-routing and to identify congested links caused by re-routed trunks for each single failure. The re-routed traffic is then analyzed and alternate Label Switched Paths (LSPs) are identified for such traffic trunks so that the traffic is directed to the alternate LSPs during the single failure event.
摘要:
An improved network router having a plurality of intelligent router ports. Each intelligent router port may have its own routing and/or forwarding engines. Thus, a centralized master routing and forwarding engine, existing in conventional routers, is not necessary. Accordingly, the bottlenecking problems associated with a centralized routing and forwarding engine are significantly reduced.
摘要:
Multiple LAN emulation servers (LESs) and broadcast and unknown servers (BUSs) are employed to serve a single emulated LAN (ELAN). The LAN emulation clients (LECs) are assigned to sub-ELANs, each of which includes several LECs of the ELAN, e.g., those that are geographically close. Each such sub-ELAN includes its own LES and BUS. The LESs and BUSs of the sub-ELANs are connected so that the sub-ELANs form a single ELAN. The LESs/BUSs can be interconnected in any pattern that allows each LES/BUS to communicate with each other LES/BUS via at least one path, which need not be direct. The LES and BUS of each sub-ELAN presents themselves as proxy-LECs of the other sub-ELANs to which they are connected. The ELAN can include a LAN Emulation Configuration Server (LECS) for downloading the connection topology and forwarding rules to all the sub-ELANs. The topology and rules are downloaded each time the ELAN is configured, e.g., initially and when the network topology changes due to failures of servers or addition and deletion of servers.
摘要:
In one embodiment of the invention, an apparatus is provided for establishing a communication session between first and second terminals in communication over a plurality of networks that employ differing transmission standards. The plurality of networks are selected from among a circuit switched network (e.g., a telephony network), a connectionless packet switched network (e.g., the Internet) and a connection-oriented packet switched network (e.g., an ATM or frame relay network). The apparatus includes a call set-up translator for translating among call set-up protocols associated with the circuit switched network, the connectionless packet switched network and the connection-oriented packet switched network. An encoding format translator is provided for translating among encoding protocols associated with the circuit switched network, the connectionless packet switched network and the connection-oriented packet switched network. Also provided is an address database for storing a plurality of addresses in different formats for each registered terminal, which includes the first and second terminals. The apparatus also includes a session manager for storing control information relating to the first and second terminals. The control information includes an identification of the first and second terminals that participate in the communication session.
摘要:
An internetwork relay system and method for transmitting IP traffic including an edge and a core. The edge includes an ingress and egress routers and the core includes a switch network. The ingress router communicates with and receives an IP packet from a source network. The ingress router attaches to each IP packet, a globally unique label which is used to forward the IP packet across the network. The relay switch network communicates with the ingress router, receives the IP packet from the ingress router and forwards the IP packet along its transmission path based on destination information included in its attached label. The egress router receives the IP packet from the switch network and forwards it to a destination network. Once received, the destination network forwards the IP packet to its intended destination.
摘要:
A temporary multimedia ELAN is formed on top of one or more existing ELANs between those end-stations (121-1, 121-2, 111-1) participating in a multimedia session, such as a video conference, at the time of initiating the session. At the end of the session the temporary ELAN is torn down. When the temporary ELAN is created an available LAN Emulation Server (LES) (241) and an available Broadcast and Unknown Server (BUS) (243) are allocated to serve those end-stations participating in the multimedia session. The BUS also serves as a multicast server to multicast a multimedia stream from one end-station to each other end-station on the temporary ELAN. The initiator of a session accesses a Multimedia Session Manager (401), which oversees and manages the session and coordinates the necessary resources. An ELAN Configuration (402) serves to dynamically assign IP addresses to end-stations to ensure that each end-station on the temporary ELAN is on a single subnet, to receive the configuration attributes of each end-station that is to be connected on the temporary ELAN, to find an available LES and BUS to serve the temporary multimedia ELAN, and to coordinate establishment of the temporary ELAN between the end-stations. Once the temporary ELAN has been formed, a Conference Configurator (403) starts executing a multimedia application already existing on each end-station or sends the executables of the selected multimedia application in real time to each end-station. During the session the Multimedia Session Manager is used to add a new end-station, drop an end-station, and terminate the session.
摘要:
Communication, for example, via the internet protocol (IP), is facilitated among ATM-attached, LAN-attached and telephone-network-attached hosts, by a so-called "RouTel" and an address server. The RouTel provides gateway capabilities for connecting a) the telephone network, e.g., via 1) integrated services digital network basic rate interface (ISDN BRI), 2) ISDN primary rate interface (ISDN PRI), or 3) modem interfaces, and b) an ATM network, via one or more ATM interfaces. Optionally, the RouTel provides interfaces for directly attaching legacy LANs, e.g., Ethernet, FDDI, and Token Ring. More particularly, the RouTel can perform IP packet forwarding between 1) a telephone-network-attached host and an ATM-attached host; 2) two telephone-network-attached hosts; and 3) a telephone-network-attached host and a legacy LAN-attached host.
摘要:
This invention provides for a technique for selectively off-loading traffic from congested sub-regions of a network to more lightly-loaded regions by making use of Multiprotocol Label Switching (MPLS). For each network element, an Interior Gateway Protocol (IGP) routing is employed to provide re-routing and to identify congested links caused by re-routed trunks for each single failure. The re-routed traffic is then analyzed and alternate Label Switched Paths (LSPs) are identified for such traffic trunks so that the traffic is directed to the alternate LSPs during the single failure event.
摘要:
A system and method for an on-line web-based advertiser-broker to subsidize calls of a plurality of VOIP operators' subscribers by showing them video advertisements from a catalogue of advertisements provided by a plurality of advertisers. The advertisement is shown by the advertiser-broker and then the call is transferred to the VoIP operator for call completion.The advertiser-broker provides the clearing-house services between many advertisers and many VoIP operators, subsidizing wholly or partially phone calls of users of VoIP operators by showing them streaming video advertisements of advertisers who pay for the calls. With this new business, phone calls get monetized through advertisers while users pay nothing for phone calls, and VoIP operators do not need to incorporate advertisers to their business.