VoATM

Abstract: A system and method are provided for maintaining a universal phonebook in a Home Network telephone system. The universal phonebook system comprises a gateway to transceive calls via external communication medium and to act as a bridge between the external communication medium and a plurality of endpoint communications devices, which are typically telephones but can also be fax machines, video-phones, modems, or the like. The gateway also maintains a universal phonebook that is accessible to all of the plurality of endpoints. The gateway establishes an out-of-band control channel between the gateway and each endpoint accessing the universal phonebook. The gateway transceives calls on external communication medium that communicate call information in a format such as voice over cable modem (VoCM), voice over DSL (VoDSL), voice over ATM (VoATM), voice over Internet Protocol (VoIP), integrated service digital network (ISDN), or plain old telephone service (POTS). The endpoints are connected with the gateway with connection interfaces such as wireless, convention telephone line, AC powerline, or dedicated hardline connections. The universal phonebook stores entries as a number/descriptor pair. The descriptor is an ASCII string with a “who” associated with a number in a way that is meaningful to the user. For example, a descriptor can be a full name, a nickname, an abbreviated name, or a business associated with the number. The descriptors can be retrieved from the UPB and presented to the user by the use of option categories. Examples of option categories include friends, colleagues, business, and personal. Once the user selects an option category, only the entries from that category are presented.

Abstract: A switch apparatus and method according to the invention provides a carrier-class switching platform with a highly optimized data path and distributed signaling stacks to achieve high-density differential voice services. Incoming voice calls of any media type (TDM voice/fax, VoIP, VoATM, VoFR) are packetized and adapted for egress transmission of the same or another media type according to the service plan profile of the parties, and/or the instantaneous availability or cost of bandwidth resources. All calls are switched in an ATM switching core with QoS characteristics that can also be determined based on service plan profile. A call server handles call setup and management functions, as well as call signaling. Advantageously, the call server provides signaling relay functions to further support and enable the media conversion of voice calls. In an exemplary implementation of the invention, up to about 6720 concurrent VoIP calls can be supported in a single platform, with a latency of only about 17 msec ingress and 25 msec egress.

Abstract: Practical solutions for the world of packetized voice over data networks *Features in-depth solutions for the design and implementation of integrated voice and data networks *Detailed configurations show network engineers how to implement packetized voice immediately *Chapters on voice theory and data theory ensure mastery of fundamental knowledge *Learn how to lower costs, streamline your organization, prepare for new multimedia applications, and gain a competitive advantage by integrating your voice and data networks The integration of voice and data networks is creating a fundamental change in the telecommunications and data industries. This change means better phone service, lower prices, new features, less maintenance, and more choices, leading to a complete convergence of the data networking and telecommunications industries into a single community. With all this growth and change, network engineers and managers need specific information on how to integrate and configure packetized voice networks. Integrating Voice and Data Networks is the one reference manual you need to learn how to integrate traditional voice technology into existing Cisco data networks.Integrating Voice and Data Networks is both a conceptual reference and a practical how-to book that bridges the gap between existing telephony networks and the new world of packetized voice over data networks. Underlying technologies are explained in a non-product-specific manner that gives a holistic understanding of voice/data integration. You'll then follow a complete process to design and implement a variety of network scenarios, leveraging author Scott Keagy's extensive experience with real voice/data networks. Integrating Voice and Data Networks focuses on the implementation of Voice over Frame Relay (VoFR), Voice over ATM (VoATM), and Voice over IP (VoIP) using Cisco IOS(r) voice gateways, including the Cisco MC3810, Cisco 2600/3600/7200/7500 series routers, and Cisco AS5300/AS5800 access servers. Scott Keagy, CCIE(r) No. 3985, leads a National Emergency Number Association (NENA) working group that is responsible for defining the future E9-1-1 interface between enterprises and service providers in IP telephony environments.As a product manager at Cisco Systems, he is responsible for E9-1-1 and emergency services features, CallManager extension mobility, and driving the network security road map for enterprise voice products. Prior to joining Cisco Systems, he was a cofounder of SK Networks Inc., a voice and data network consulting firm with customers including Cisco Systems, Pacific Bell, SBC Datacomm, and their customers. In addition to his consulting experience, Scott has IT experience working for Cisco Systems, Hewlett-Packard, and the United States Department of Commerce. He earned a bachelor's degree in biology from University of California, San Diego.

Abstract: Most major carriers are deploying multiprotocol label switching (MPLS) and are also migrating voice traffic to packet transport. This article analyzes how those trends can be combined. It compares the advantages of VoMPLS with VoATM, VoIP, and VoFR, from the viewpoints of bandwidth utilization, implementation issues, and the region of the network (access/backbone) in which implementation takes place. VoMPLSoPPP is more efficient than VoMPLSoATM or VoMPLSoEthernet. In the network backbone VoMPLSoPPP is most efficient. VoAAAL2oATM has intermediate efficiency, and VoIP is highly inefficient. In the access network use of header compression improves the efficiency of VoIP but does not bring it to the level of VoAAL2oATM, which is approximately as efficient as VoMPLSoEthernet. VoMPLSoPPP remains most efficient.