Cisco Voice over IP (Cvoice) (Authorized Self-Study Guide) / Edition 2
  • Cisco Voice over IP (Cvoice) (Authorized Self-Study Guide) / Edition 2
  • Cisco Voice over IP (Cvoice) (Authorized Self-Study Guide) / Edition 2

Cisco Voice over IP (Cvoice) (Authorized Self-Study Guide) / Edition 2

by Kevin Wallace
     
 

ISBN-10: 1587052628

ISBN-13: 9781587052620

Pub. Date: 09/15/2006

Publisher: Pearson




Foundation learning for CCVP voice over IP



Kevin Wallace, CCIE® No. 7945



Cisco Voice over IP, Second Edition, is a Cisco®-authorized, self-paced learning tool for Cisco Certified Voice Professional (CCVP) voice over IP (VoIP) foundation learning. This book provides you with the…  See more details below

Overview




Foundation learning for CCVP voice over IP



Kevin Wallace, CCIE® No. 7945



Cisco Voice over IP, Second Edition, is a Cisco®-authorized, self-paced learning tool for Cisco Certified Voice Professional (CCVP) voice over IP (VoIP) foundation learning. This book provides you with the knowledge you need to implement and support data and voice integration solutions at the network-access level. By reading this book, you will gain a thorough understanding of basic IP telephony operation and router configuration, support, troubleshooting, and integration with an existing public switched telephone network (PSTN).



Cisco Voice over IP lays the foundation for gaining hands-on skills and a significant understanding of packet telephony. Coverage includes analog and digital voice connections, voice interface configuration, voice dial peer configuration, VoIP fundamentals, VoIP signaling and call control protocols, and voice quality improvement and maintenance. Chapter review questions, practice items, real-world examples, and hands-on lab exercises all help reinforce learning. Whether you are preparing for CCVP certification or simply want to gain a better understanding of VoIP, you will benefit from the foundation information presented in this book.



Cisco Voice over IP is part of a recommended learning path from Cisco Systems® that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press®. To find out more about instructor-led training, e-learning, and hands-on instruction offered byauthorized Cisco Learning Partners worldwide, please visit: cisco.com/go/authorizedtraining.



Kevin Wallace, CCIE® No. 7945, CCVP, CCNP®, CCDP®, is a full-time instructor for Thomson NETg. With 17 years of Cisco internetworking experience, Kevin has been a network design specialist for The Walt Disney World Resort and a network manager for Eastern Kentucky University.


  • Understand traditional telephony network concepts and operation as well as the building blocks of packet telephony networks
  • Examine the interactions of telephony operations at an electrical level
  • Evaluate strategies for overcoming specific challenges in a VoIP network, such as the transmission of fax and modem tones
  • Attach a Cisco voice-enabled router to existing telephony devices, such as a PBX or an analog phone
  • Add call-routing intelligence to a Cisco voice-enabled router through the use of dial peers
  • Address potential challenges and design considerations associated with sending voice across an IP-based network
  • Understand the theory and configuration of the call control protocols including H.323, SIP, and MGCP
  • Mitigate voice quality issues with various Cisco quality of service (QoS) mechanisms

This volume is in the Certification Self-Study Series offered by Cisco Press®. Books in this series provide officially developed self-study solutions to help networking professionals understand technology implementations and prepare for the Cisco Career Certifications examinations.



Category: IP Communications


Covers: VoIP



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Product Details

ISBN-13:
9781587052620
Publisher:
Pearson
Publication date:
09/15/2006
Series:
Self-Study Guide Series
Edition description:
REV
Pages:
486
Product dimensions:
7.50(w) x 9.10(h) x 1.30(d)

Related Subjects

Table of Contents


Introduction


Chapter 1
Fundamentals of Telephony Networks


Basic Components of Telephony Networks


CO Switches and Switching Systems


Privately Owned Switches


Call Signaling


Multiplexing


Fundamentals of Packet Telephony Networks


Benefits of Packet Telephony Networks


Packet Telephony Components


Call Control


Real-Time versus Best-Effort Traffic


IP Telephony Applications


Analog Interfaces


Digital Interfaces


IP Phones


Types of Deployment


Summary


Chapter Review Questions



Chapter 2
Analog and Digital Voice Connections


Analog Voice Fundamentals


Local-Loop Connections


Local-Loop Signaling


Trunk Connections


Trunk Signaling


Echo


Analog-to-Digital and Digital-to-Analog Voice Encoding


Sampling and the Nyquist Theorem


Quantization


Voice Compression Standards


Signaling Systems


Channel Associated Signaling


Common Channel Signaling Systems


Signaling System Interoperability


Enabling VoIP Fax and Modem Transmission


Cisco Fax Relay


T.38 Fax Relay


T.37 Fax Store and Forward


Fax Pass-Through


Modem Pass-Through


Modem Relay


Summary


Chapter Review Questions


Lab Exercise: Navigating Your Hands-On Lab


Task 1: Physical Connectivity


Task 2: Initial Configuration


Task 3: Exercise Verification


Suggested Solution



Chapter 3
Voice Interface Configuration


Configuring Voice Ports


Voice Applications


FXS Ports


FXO Ports


E&M Ports


Timers and Timing


Digital Voice Ports


ISDN


Common Channel Signaling Options


Monitoring and Troubleshooting


Tuning Voice Quality


Electrical Characteristics


Voice Port Tuning


Configuring Echo Cancellation


Summary


Chapter Review Questions


Lab Exercise: Voice Port Configuration


Task 1: Configure FXS Port Parameters


Task 2: Exercise Verification


Suggested Solution



Chapter 4
Voice Dial Peer Configuration


Configuring Dial Peers


Understanding Call Legs


Understanding Dial Peers


Configuring POTS Dial Peers


Configuring VoIP Dial Peers


Configuring Destination-Pattern Options


Characteristics of the Default Dial Peer


Matching Inbound Dial Peers


Matching Outbound Dial Peers


Configuring Hunt Groups


Collecting and Analyzing Digits


Manipulating Digits


Special-Purpose Connections


PLAR


PLAR-OPX


Trunk Connection


Tie-Line Connection


Summary


Chapter Review Questions


Lab Exercise: POTS and VoIP Dial Peers


Task 1: Configure POTS Dial Peers


Task 2: Exercise Verification


Suggested Solution


Lab Exercise: PLAR Connection


Task 1: Configure PLAR


Task 2: Exercise Verification


Suggested Solution



Chapter 5
VoIP Fundamentals


Understanding VoIP Requirements


Business Case for VoIP


VoIP Functional Components


VoIP Protocols


VoIP Service Considerations


RTP and RTCP


VoIP Network Architectures


Centralized Network Architectures


H.323 Distributed Network Architectures


SIP Distributed Network Architectures


Comparing Network Architectures


Simple Multisite IP Telephony Network


Interconnecting VoIP Protocols


Understanding Gateways


Practice Scenarios: Network Architecture


Building Scalable Dial Plans


Numbering Plans and Dial Plans


Scalable Dial Plans


Enhancing and Extending an Existing Plan to Accommodate VoIP


Accounting for Caller Mobility for 911 Services


Calculating Bandwidth Requirements


CODEC Payload Bandwidth Requirements


Impact of Voice Samples and Packet Size on Bandwidth


Data Link Overhead


Security and Tunneling Overhead


Calculating the Total Bandwidth for a VoIP Call


Effects of Voice Activity Detection on Bandwidth


Cisco Voice CODEC Bandwidth Calculator


Allocating Bandwidth for Voice and Data Traffic


Traffic Statistics


Establishing Network Objectives for Voice and Data


Meeting the Current Network Objective


Traffic Theory


Busy Hour


Erlangs


Traffic Probability Assumptions


Traffic Calculations


Call Density Matrix


Bandwidth Calculations


Security Implications of VoIP Networks


Security Policies for VoIP Networks


Threats to VoIP


Secure LAN Design


Communicating Through a Firewall


Delivering VoIP over a VPN


Summary


Chapter Review Questions


Lab Exercise: RTP Header Compression


Task 1: Change the Load Interval on Router R2’s Serial Interface


Task 2: Take a Baseline Measurement


Task 3: Enable cRTP


Task 4: Verify cRTP


Suggested Solution



Chapter 6
VoIP Signaling and Call Control Protocols


The Need for Signaling and Call Control


VoIP Signaling


Call Control Models


Call Control Translation


Call Setup


Call Administration and Accounting


H.323 Concepts and Configuration


H.323 and IP


Functional Components of H.323


H.323 Gateways


IP-to-IP Gateways


H.323 Gatekeepers


Multipoint Conferences


H.323 Call Establishment and Maintenance


RAS Messages


Call Flows


Types of Multipoint Conferences


Deploying and Configuring H.323


SIP Concepts and Configuration


SIP and Associated Standards


Cisco SIP Support


SIP Components


SIP Applications


SIP Messages


Status Codes


SIP Addressing


SIP Call Setup Models


Robust SIP Design


Cisco’s Implementation of SIP


Configuring SIP on a Cisco Router


Monitoring and Troubleshooting SIP


MGCP Concepts and Configuration


MGCP and Its Associated Standards


Basic MGCP Components


Basic MGCP Concepts


MGCP Sessions


MGCP Control Commands


MGCP Call Flows


Robust MGCP Design


Cisco's Implementation of MGCP


Configuring MGCP


Cisco Unified CallManager MGCP Configuration


Monitoring and Troubleshooting MGCP


Comparing Call Control Models


Call Control Model Feature Comparison


Strengths of H.323, SIP, and MGCP


Selecting Appropriate Call Control


Summary


Chapter Review Questions


Lab Exercise: H.323 Gatekeeper


Task 1: Configure the H.323 Gatekeeper


Task 2: Configure H.323 Gateways


Task 3: Verify the Configuration


Suggested Solution


Chapter 7
Improving and Maintaining Voice Quality


Optimizing Voice Quality


Factors that Affect Voice Quality


Quality Metrics


Objectives of QoS


AutoQoS


AutoQoS Features


Configuring AutoQoS on a Router


AutoQoS for Enterprise


Configuring AutoQoS on a Catalyst Switch


Implementing Call Admission Control


Effects of Bandwidth Oversubscription


CAC Operation


RSVP


CAC Tools


Summary


Chapter Review Questions


Lab Exercise: Router AutoQoS


Task 1: Configure AutoQoS on the Slower Interface


Task 2: Configure AutoQoS on the Faster Interface


Task 3: Exercise Verification


Suggested Solution


Appendix A
Answers to Chapter Review Questions


Appendix B
Cisco VoIP Applications


Glossary


Index

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