Cisco Voice Gateways and Gatekeepers

ISBN: 158705258X
EAN: 2147483647

Year: 2004
Pages: 218

Authors: David Mallory, Ken Salhoff, Denise Donohue

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Part I: Voice Gateways and Gatekeepers

Gateways and Gatekeepers

• Gateways and Gatekeepers
• The Role of Voice Gateways
• The Role of Voice Gatekeepers
• The Role of IP-to-IP Gateways
• Introduction to Voice Protocols
• Call Control Agents
• Deployment Scenarios
• Case Study: Introduction
• Chapter Review Questions

Part II: Gateways

Media Gateway Control Protocol

• Media Gateway Control Protocol
• Introduction to MGCP
• MGCP Operation
• Call Flow with MGCP
• Dial Plan Considerations
• Implementing MGCP Gateways
• Securing MGCP Gateways
• Troubleshooting Tools
• Case Study: Configuring an MGCP Gateway
• Review Questions

H.323

• H.323
• H.323 Specifications
• H.323 Network Components
• Call Flow
• H.323 Protocol Pros and Cons
• When to Use H.323
• Dial Plan Considerations
• Implementing H.323 Gateways
• Securing H.323 Gateways
• Troubleshooting Tools
• Case Study: Configuring an H.323 Gateway
• Review Questions

Session Initiation Protocol

• Session Initiation Protocol
• Description of SIP
• SIP Call Flow
• SIP Pros and Cons
• When to Use SIP
• Dial Plan Considerations
• Implementing SIP Gateways
• Securing SIP Gateways
• Allowing H.323 to SIP Connections
• Troubleshooting Tools
• Case Study: Configuring SIP Between a Gateway and CallManager 5.x
• Review Questions

Circuit Options

• Circuit Options
• Circuit Signaling
• Analog Circuits
• Digital Circuits
• Review Questions

Connecting to the PSTN

• Connecting to the PSTN
• PSTN Circuit Selection Overview
• Analog Trunks
• Digital Trunks
• Case Study: Add an E1 R2 Connection to the Leeds Gateway
• Review Questions

Connecting to PBXs

• Connecting to PBXs
• Analog Trunks
• Digital Trunks
• Configuring Transparent Common Channel Signaling
• Case Study: Implementing a Cisco Voice Gateway at the Shanghai Office
• Review Questions

Connecting to an IP WAN

• Connecting to an IP WAN
• Applications for Connecting to an IP WAN
• Design Considerations
• Quality of Service
• Providing Fax and Modem Services
• Security
• Case Study: Using a T1 Link as a Tie Line
• Review Questions

Dial Plans

• Dial Plans
• Numbering Plans
• Overlapping Numbering Plans
• Building a Scalable Dial Plan
• Dial Peers
• Dial Peer Matching
• Case Study: Configuring PSTN Access
• Review Questions

Digit Manipulation

• Digit Manipulation
• Basic Digit Manipulation
• Number Expansion
• Voice Translation Rules and Profiles
• Manipulating Caller ID
• Order of Operation in Digit Manipulation
• Troubleshooting Digit Manipulation
• Case Study
• Review Questions

Influencing Path Selection

• Influencing Path Selection
• Hunt Groups
• Using Trunk Groups
• Tail-End Hop-Off
• Call Admission Control
• POTS-to-POTS Call Routing Considerations
• Case Study: Implementing Gateway-Controlled RSVP
• Review Questions

Configuring Class of Restrictions

• Configuring Class of Restrictions
• COR Overview
• COR Operation
• Implementing COR
• Assigning COR Lists with SRST
• Assigning COR Lists with Cisco CallManager Express
• Restricting Inbound Calls
• Case Study: Implementing COR for Miami
• Review Questions

SRST and MGCP Gateway Fallback

• SRST and MGCP Gateway Fallback
• SRST Overview
• Configuring SRST
• Dial Plan Considerations
• SRST Features
• SIP SRST
• Call Preservation
• Secure SRST
• MGCP Gateway Fallback
• Configuring MGCP Gateway Fallback
• Verifying and Troubleshooting SRST
• Verifying and Troubleshooting MGCP Gateway Fallback
• Case Study: Integrating SRST with an Analog Voice-Mail System
• Review Questions

DSP Resources

• DSP Resources
• Need for DSP Resources
• Determining the DSP Resources Required
• Configuring DSP Resources
• Transcoding for CallManager Express
• Case Study: Add DSP Resources to the Miami Gateway
• Review Questions

Using Tcl Scripts and VoiceXML

• Using Tcl Scripts and VoiceXML
• Tcl IVR and VoiceXML Application Overview
• Sample Applications
• Downloading Tcl Scripts from Cisco.com
• Configuring the Gateway to Use a Tcl Script
• Implementing the AA Tcl Script
• Creating Audio Files
• Restrictions and Caveats
• Case Study: Implementing ACD Application
• Review Questions

Part III: Gatekeepers

Deploying Gatekeepers

• Deploying Gatekeepers
• Gatekeeper Functionality
• Gatekeeper Signaling
• E.164 Number Resolution
• Call Admission Control
• Gatekeeper Deployment Models
• Gatekeepers with CallManager
• Security with Gatekeepers
• Review Questions

Gatekeeper Configuration

• Gatekeeper Configuration
• Configuring Basic Gatekeeper Functionality
• Multiple Gatekeeper Configurations
• Configuring Directory Gatekeepers
• Troubleshooting Gatekeepers
• CallManager and Gatekeepers
• Gatekeeper Redundancy
• Configuring Resource Availability Indicator
• Configuring Gatekeeper Security
• Case Study: Deploying Gatekeepers to Assist in Migration to VoIP
• Review Questions

Part IV: IP-to-IP Gateways

Cisco Multiservice IP-to-IP Gateway

• Cisco Multiservice IP-to-IP Gateway
• IP-to-IP Gateway Overview
• Cisco Multiservice IP-to-IP Gateway
• Basic Configuration
• IP-to-IP Gateway Features
• Case Study: Providing Enterprise VoIP Trunking to VoIP Service of the Service Provider
• Review Questions

Appendix A. Answers to Chapter-Ending Review Questions

• Appendix A. Answers to Chapter-Ending Review Questions

Index