Cisco Voice Gateways and Gatekeepers
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Cisco Voice Gateways and Gatekeepers Understanding and configuring GW/GK in complex VoIP networks Denise Donohue, CCIE® No. 9566 David Mallory, CCIE No. 1933 Ken Salhoff, CCIE No. 4915 Deployments of voice over IP (VoIP) networks continue at a rapid pace. Voice gateways are an essential part of VoIP networks, handling the many tasks involved in translating between transmission formats and protocols and acting as the interface between an IP telephony network and the PSTN or PBX. Gatekeepers and IP-to-IP gateways help these networks scale. Gatekeepers provide call admission control, call routing, address resolution, and bandwidth management between H.323 endpoints including Cisco IOS® voice gateways and Cisco® Unified CallManager clusters. IP-to-IP gateways allow VoIP calls to traverse disparate IP networks. Cisco Voice Gateways and Gatekeepers provides detailed solutions to real-world problems encountered when implementing a VoIP network. This practical guide helps you understand Cisco gateways and gatekeepers and configure them properly. Gateway selection, design issues, feature configuration, and security and high-availability issues are all covered in depth. The abundant examples, screen shots, configuration snips, and case studies make this a truly practical and useful guide for anyone interested in the proper implementation of gateways and gatekeepers in a VoIP network. Emphasis is placed on the accepted best practices and common issues encountered in real-world deployments. Cisco Voice Gateways and Gatekeepers is divided into four parts. Part I provides an overview of an IP voice network. Part II is dedicated to voice gateways, includingdiscussions of Media Gateway Control Protocol (MGCP); H.323; Session Initiation Protocol (SIP); voice circuit options; connecting to the PSTN, PBX, and IP WAN; dial plans; digit manipulation; route selection; class of restriction; Survivable Remote Site Telephony (SRST) and MGCP fallback; digital signal processor (DSP) resources; and Tool Command Languaue (Tcl) scripts and Voice “With this book, the authors provide an in-depth look at the breadth of voice gateway features and capabilities, as well as providing voice gateway configuration guidance.” –Christina Hattingh, Access Technology Group, Cisco Systems® Understand the pros and cons of MGCP, H.323, and SIP, how they implement call signaling and describe call flow, and how to configure each protocol Learn the various analog and digital voice circuit options used to connect a VoIP network to the PSTN Configure and troubleshoot PSTN, PBX, and IP WAN connections Build scalable dial plans and understand the different types of dial peers Understand the various ways gateways control called and calling phone numbers Examine call admission control (CAC) techniques Configure Class of Restrictions (CoR) for both inbound and outbound calls Deploy and troubleshoot SRST and MGCP fallback Evaluate DSP considerations and resources Support interactive voice response (IVR) and advanced call-handing applications using Tcl scripts and VDeploy and configure basic and advanced gatekeeper functions Configure and troubleshoot IP-to-IP gateways This book is also recommended self-study training for the CCVP GWGK exam. This IP communications book is part of the Cisco Press® Networking Technology Series. IP communications titles from Cisco Press help networking professionals understand voice and IP telephony technologies, plan and design converged networks, and implement network solutions for increased productivity. Category: Cisco Press–IP Communications Covers: VoIP gateways and gatekeepers $65.00 USA / $81.00 CAN
Ch. 1Gateways and gatekeepers5Ch. 2Media gateway control protocol25Ch. 3H.32353Ch. 4Session initiation protocol79Ch. 5Circuit options115Ch. 6Connecting to the PSTN145Ch. 7Connecting to PBXs183Ch. 8Connecting to an IP WAN219Ch. 9Dial plans275Ch. 10Digit manipulation303Ch. 11Influencing path selection327Ch. 12Configuring class of restrictions365Ch. 13SRST and MGCP gateway fallback381Ch. 14DSP resources411Ch. 15Using Tcl scripts and VoiceXML439Ch. 16Deploying gatekeepers459Ch. 17Gatekeeper configuration485Ch. 18Cisco multiservice IP-to-IP gateway551
