Abstract: A system and method is provided for transmitting a packet received at a Foreign Agent associated with a Packet Data Service Node where the packet has a source network layer address, such as an Internet Protocol address of a mobile station that points to a geographically remote Home Agent and a destination Internet Protocol address. The method comprises caching Internet Protocol addresses in memory, comparing the destination Internet Protocol address of the received packet with the Internet Protocol addresses in memory, and if no match is found, querying a Policy Server for a match, and forwarding the received packet with the Internet Protocol address of the Foreign Agent associated with the Packet Data Service Node as the source Internet Protocol address when the destination address of the received packet matches the Internet Protocol address in memory or Policy Server, resulting in significant savings in transport cost and response time.

Abstract: The invention comprises a system and method for transmitting and receiving multiplexed Voice over Internet Protocol (VoIP) traffic. The invention advantageously provides efficient gateway-to-gateway communication by reducing overhead where at least two conversations are transmitted between VoIP gateways. Additionally, signal degradation is avoided since there is no transcoding of signals.

Abstract: A simplified methodology for accomplishing traffic management in a packet based network is achieved by allowing allocation of bandwidth based on a count of the number of endpoint connections associated with a specific service for a corresponding network device. A network device (e.g., IP router) can be configured to count the number of TCP/IP and UDP/IP connections and bandwidth usage per interface. The counting can be done by identifying the IP Addresses, Type of Service (TOS), and TCP/UDP and/or UDP/IP socket number range in the IP Header of a packet and then querying a specific communication type. When reaching the maximum allowed connections or bandwidth for a specific service, the network device (e.g., IP router) stops forwarding any new calls by means of dropping packets of new calls and informing the given endpoints to disconnect the new calls.

Abstract: A method and apparatus for transporting Asynchronous Transfer Mode protocol cells over an Internet Protocol backbone network is disclosed herein. ATM signaling cells are initially received at a source gateway interconnected to the IP backbone. The signaling message is converted to an H.323 message and transmitted to a controller which provides ATM to IP address translation. The corresponding IP address is received at the source gateway and ATM bearer cells of the same call as the original ATM signaling cell are encapsulated with IP headers which include the IP address to form an IP packet which keeps the ATM cells intact within the packet. The IP packet is transferred onto the IP backbone network and routed to the appropriate destination gateway where the IP packets are decapsulated to retrieve the original ATM bearer cell.

Abstract: The invention comprises a system and method for transmitting and receiving VoDSL voice traffic that avoids, where possible, the transcoding of a speech signal multiple times. The invention advantageously provides enhanced Quality of Service (QoS) by opportunistically avoiding signal degradation where VoDSL to VoDSL gateway communications may be provided.

Abstract: ATM-coupled multicast data are transmitted to a multiplicity of ATM users over an IP backbone by having a controller in the IP backbone translate a pre-stored Multicast Initiating Address into a multiplicity of pre-stored pairs of addresses, each pair composed of a user's ATM destination address and the IP address of the (user) gateway serving the user's ATM destination, then establishing connections between the multicast source ATM address and each of the user's ATM addresses, having IP routers attach the user gateways to the multicast group, and encapsulating the multicast data ATM cells in IP packets for routing to the user gateways, and decapsulating the multicast data ATM cells for routing to the user ATM addresses.

Abstract: A simplified methodology for accomplishing traffic management in a packet based network is achieved by allowing allocation of bandwidth based on a count of the number of endpoint connections associated with a specific service for a corresponding network device. A network device (e.g., IP router) can be configured to count the number of TCP/IP and UDP/IP connections and bandwidth usage per interface. The counting can be done by identifying the IP Addresses, Type of Service (TOS), and TCP/UDP and/or UDP/IP socket number range in the IP Header of a packet and then querying a specific communication type. When reaching the maximum allowed connections or bandwidth for a specific service, the network device (e.g., IP router) stops forwarding any new calls by means of dropping packets of new calls and informing the given endpoints to disconnect the new calls.

Abstract: Let's assume a Mobile Station (MS) with the home location in New York connects to the wireless network in La Jolla, Calif., to a Packet Data Service Node/Foreign Agent (PDSN/FA) in San Diego. The MS has an IP address that points to the home network in New York. To authenticate the user, the PDSN/FA connects to the Home Agent in New York. After authentication/authorization, the user will ask for services by sending IP packets to the PDSN/FA. The user requests restaurant recommendations within 2 miles from his/her current position. The PDSN/FA forwards the user's IP packets to the service provider server that in our example is Los Angeles. The network determines the user's current location and provides him/her with a list of restaurants. The server sends the packets to the source address learned from the user's packets. This address points to the home network in New York and the packets will be forwarded to the Home Agent in New York.

Abstract: Managing multi-media call flows involves establishing a call in an environment having a first signaling protocol to an environment having a second signaling protocol, identifying in the first signaling protocol that the call is going to the environment having the second signaling protocol, replacing a first signaling element of the first signaling protocol with a corresponding second signal element of the second protocol, and completing the call on the basis of the first signaling protocol with the corresponding second signaling element of the second protocol.

Abstract: A multi-user Time Division Multiplex (TDM) system includes a plurality of stations connected by one or more unidirectional data buses. A "queue of request" (QR) counter is added to each station having destination slot release capability (erasure station). The QR count indicates how many idle time slots on a first channel have been released by an erasure station. The QR counter is incremented when that station becomes active (i.e., has a data transmit request) and when a request bit on a second channel has been erased by that erasure station. The QR counter is decremented when a used time slot on the first channel is released to an idle time slot condition as long an outstanding requests exist from downstream stations. When the QR count is negative (indicating more released time slots than erased requests) that station erases a request signal on the channel opposite the channel when the time slot was released.