Catalyst Switch Role in IP Telephony

Cisco voice-capable Catalyst switches can provide three primary features to assist you with your IP telephony deployment:

  • Inline power Inline power capabilities allow a Cisco Catalyst switch to send power through the Category 3 (or better) copper cabling to a Cisco IP Phone or other inline power-compatible devices (such as wireless access points) without the need for an external power supply. Inline power is also referred to as Power over Ethernet (PoE). Inline power was developed in 2000 by Cisco to support the emerging IP telephony solution and was later standardized by the IEEE as the 802.3af standard.
  • Auxiliary VLAN support Auxiliary VLAN support allows a switch to support multiple VLANs on a single access port. You can connect a PC to the back of the Cisco IP Phone because some Cisco IP Phones have built-in switches. Auxiliary VLANs allow you to place the IP Phone, and the devices that are attached through the IP Phone, on separate VLANs.
  • Class of service (CoS) marking CoS marking is data link layer (Layer 2) marking that is used to prioritize network traffic. Prioritizing voice traffic is critical in IP telephony networks. If voice traffic is not given priority, poor voice quality may result because voice frames wait in the switch queue behind large data frames. The switch can use existing CoS marking to prioritize network traffic and can also classify and mark traffic that it receives.

Part I: Cisco CallManager Fundamentals

Introduction to Cisco Unified Communications and Cisco Unified CallManager

Cisco Unified CallManager Clustering and Deployment Options

Cisco Unified CallManager Installation and Upgrades

Part II: IPT Devices and Users

Cisco IP Phones and Other User Devices

Configuring Cisco Unified CallManager to Support IP Phones

Cisco IP Telephony Users

Cisco Bulk Administration Tool

Part III: IPT Network Integration and Route Plan

Cisco Catalyst Switches

Configuring Cisco Gateways and Trunks

Cisco Unified CallManager Route Plan Basics

Cisco Unified CallManager Advanced Route Plans

Configuring Hunt Groups and Call Coverage

Implementing Telephony Call Restrictions and Control

Implementing Multiple-Site Deployments

Part IV: VoIP Features

Media Resources

Configuring User Features, Part 1

Configuring User Features, Part 2

Configuring Cisco Unified CallManager Attendant Console

Configuring Cisco IP Manager Assistant

Part V: IPT Security

Securing the Windows Operating System

Securing Cisco Unified CallManager Administration

Preventing Toll Fraud

Hardening the IP Phone

Understanding Cryptographic Fundamentals

Understanding the Public Key Infrastructure

Understanding Cisco IP Telephony Authentication and Encryption Fundamentals

Configuring Cisco IP Telephony Authentication and Encryption

Part VI: IP Video

Introducing IP Video Telephony

Configuring Cisco VT Advantage

Part VII: IPT Management

Introducing Database Tools and Cisco Unified CallManager Serviceability

Monitoring Performance

Configuring Alarms and Traces

Configuring CAR

Using Additional Management and Monitoring Tools

Part VIII: Appendix

Appendix A. Answers to Review Questions


Authorized Self-Study Guide Cisco IP Telephony (CIPT)
Cisco IP Telephony (CIPT) (Authorized Self-Study) (2nd Edition)
ISBN: 158705261X
EAN: 2147483647
Year: 2004
Pages: 329 © 2008-2020.
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