| Appendix A. Answers to Review Questions

1.	C The icon of a video camera on the Cisco IP Phone status line means that the Cisco IP Phone is configured to support video. This occurs when the administrator enables video capabilities in the CallManager Administration utility.

2.	B Cisco requires you to plug the PC with Cisco VT Advantage client software into the access port of the IP phone. This allows the IP phone to recognize the client PC (and installed software) and enable video capabilities for incoming and outgoing calls.
3.	A and C The Cisco Audio Session Tunnel is a Cisco proprietary protocol used to signal between the VT Advantage software and IP phone. RTP is used to stream video.
4.	E, F, and G Only the Cisco 7940, 7960, and 7970 IP Phones (and later) can support video.
5.	B and C Both the PC port and Retry Video Call as Audio settings are enabled by default. You must enable the video capabilities of the IP phone to support VT Advantage.
6.	D The gatekeeper always requests double the amount of bandwidth required by the codec to allow sufficient room for overhead.
7.	A The only camera hardware supported by the VT Advantage software is the Cisco VT Camera.
8.	D The Cisco proprietary wideband codec offers impeccable quality, but is considered a "LAN-only" protocol due to the whopping 7 Mbps it consumes.
9.	D The VT Advantage software can stream up to 30 fps. This level produces extremely smooth (TV quality) video streams.

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

Index