Deploying Voice over Wireless LANs

Summary

Master the design, installation, management and troubleshooting of a voice network over a wireless LAN from industry leader Jim Geier.

Author Biography

Jim Geier is the founder of Wireless-Nets, Ltd., and the company’s principal consultant. His 25 years of experience includes the analysis, design, software development, installation, and support of numerous wireless network-based systems for enterprises, airports, homes, retail stores, manufacturing facilities, warehouses, hospitals, and cities worldwide.

Jim has been active within the Wi-Fi Alliance, responsible for certifying interoperability of 802.11 (Wi-Fi) wireless LANs. He has also been active with the IEEE 802.11 Working Group, responsible for developing international standards for wireless LANs. He served as Chairman of the IEEE Computer Society, Dayton Section, and Chairman of the IEEE International Conference on Wireless LAN Implementation. Jim is an advisory board member of several leading wireless LAN companies.

Jim is the author of several books, including Wireless Networks First Step (Cisco Press), Wireless LANs (Sams), Wireless Networking Handbook(MTP), and Network Reengineering(McGraw-Hill), as well as numerous articles.

Jim’s education includes a bachelor’s and master’s degree in electrical engineering and a master’s degree in business administration.

Contact Jim Geier at jimgeier@wireless-nets.com.

Fundamental Elements
VoWLAN Applications and Benefits
The Role of VoWLAN
Solutions History of VoWLANs
VoIP
Wireless LANs Healthcare Enterprises Universities Retail Warehouses Manufacturing Small Offices and Homes Security Systems Determining ROI
Initial Analysis
Costs
Savings
Payback Period
Chapter Summary
Chapter Review Questions
VoWLAN System Components
VoWLAN System Overview Cisco 7920 Wireless IP Phone Cisco IP Softphone Cisco Call
Manager Cisco Call
Manager Express Linksys Wi-Fi Video Cameras Wireless Network Infrastructures
Traditional Access Point Networks
Wireless Switched Networks
Mesh Networks
Chapter Summary
Chapter Review Questions
VoWLAN Signaling Fundamentals Voice Attributes Video Attributes VoIP Call Flow
H.323
Skinny Client Control Protocol (SCCP)
Session Initiation Protocol (SIP) Radio Frequency (RF) Signals
Modulation
RF Signal Characteristics
Gain
Signal-to-Noise Ratio
Spread Spectrum
Orthogonal Frequency Division Multiplexing (OFDM)
FCC Rules Wireless Impairments
Poor Signal Coverage
Latency
RF Interference
Limited Capacity
Multipath
Chapter Summary
Chapter Review Questions
Critical Technologies
Wireless LAN Technologies Infrastructure Mode
Scanning
Data Transfer
Roaming Ad Hoc Mode Wireless Medium Access
DCF
PCF 802.11 Physical Layer Standards
802.11a
802.11b
802.11g
802.11n
Comparison of 802.11 Standards Wireless Configuration Parameters
SSID
RF Channels
Transmit Power
Data Rates
Power-Save Mode
RTS/CTS
Fragmentation
RTS/CTS and Fragmentation Summary
Chapter Summary
Chapter Review Questions
VoWLAN Security Solutions Security Implications
Passive Monitoring
Unauthorized Access
Denial of Service Encryption
WEP
TKIP
AES
WPA
802.11i
Virtual Private Networks Authentication
Open System Authentication
Shared Key Authentication
IEEE 802.1X
Cisco LEAP Tips for Enhancing Security
SSID Broadcasting
Systems Management
Access Point Installation
Rogue Access Points
Signal Propagation
Chapter Summary
Chapter Review Questions
Implementation Steps
Analyzing VoWLAN Requirements Overall Requirements Analysis Steps Identifying Potential Requirements
Applications
Users
Utilization
Coverage Areas
Roaming
Environment
Security
Client Devices
Existing Systems
Policies and Preferences
Budget
Schedules Verifying and Validating Requirements Documenting Requirements
Chapter Summary
Chapter Review Questions
Designing a VoWLAN Solution Overall Design Steps Deployment Models
Single-Site Architecture
Multisite WAN with Centralized Call Processing
Multisite WAN with Distributed Call Processing
Roaming Security Network Infrastructure
Virtual LANs
Multicasting
Switch Recommendations
Quality of Service Placement of Access Points
Wireless Capacity Analysis
RF Site Survey Document Findings
Chapter Summary
Chapter Review Questions
Installing, Configuring, and Testing a VoWLAN
System Installing Access Points
Table of Contents provided by Publisher. All Rights Reserved.

Supplemental Materials

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