Cisco Voice Gateways And Gatekeepers

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, including discussions 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 XML (VXML). Part III addresses voice gatekeepers, including detailed deployment and configuration. Part IV is dedicated to IP-to-IP gateways.


TABLE OF CONTENT:
Chapter 01 - Gateways and Gatekeepers
Chapter 02 - Media Gateway Control Protocol
Chapter 03 - H.323
Chapter 04 - Session Initiation Protocol
Chapter 05 - Circuit Options
Chapter 06 - Connecting to the PSTN
Chapter 07 - Connecting to PBXs
Chapter 08 - Connecting to an IP WAN
Chapter 09 - Dial Plans
Chapter 10 - Digit Manipulation
Chapter 11 - Influencing Path Selection
Chapter 12 - Configuring Class of Restrictions
Chapter 13 - SRST and MGCP Gateway Fallback
Chapter 14 - DSP Resources
Chapter 15 - Using Tcl Scripts and VoiceXML
Chapter 16 - Deploying Gatekeepers
Chapter 17 - Gatekeeper Configuration
Chapter 18 - Cisco Multiservice IP-to-IP Gateway