Octiober 2008
2
Installation Guide
Table of Contents
Introduction..................................................................................................................... 3
2.0 Wireless LAN Layout Considerations............................................................... 3
2.1 Coverage........................................................................................................................................3
2.1.1
Overlapping Coverage.............................................................................................................4
2.1.2
Signal Strength ........................................................................................................................4
802.11b/g Deployment Considerations .........................................................................................5
2.2
802.11a Deployment Considerations............................................................................................5
2.3
Access Point Configuration Considerations..................................................................................5
2.3.1
Channel Selection ...................................................................................................................5
2.3.2
Transmission Power................................................................................................................7
2.3.3
Interference..............................................................................................................................7
2.3.4
Multipath and Signal Distortion................................................................................................8
2.3.5
Site Surveys.............................................................................................................................8
2.4
Capacity...........................................................................................................................................9
2.4.1
Access Point Bandwidth Considerations.................................................................................9
2.4.2
Push-to-Talk Multicasting Considerations.............................................................................10
2.4.3
Telephone Usage ..................................................................................................................10
3.0 Network Infrastructure Considerations .......................................................... 11
3.1 Physical Connections ..................................................................................................................11
3.2
Assigning IP Addresses...............................................................................................................11
3.3
Software Updates Using TFTP.....................................................................................................12
4.0 Quality Of Service............................................................................................. 12
4.1 Avaya Voice Priority Processor (AVPP)......................................................................................12
4.1.1
AVPP Infrastructure...............................................................................................................12
4.1.2
AVPP Capacity ......................................................................................................................12
4.1.3
Multiple AVPPs......................................................................................................................13
4.2
Access Point Quality of Service (QoS)........................................................................................13
4.3
VIEW Certification........................................................................................................................13
5.0 Security.............................................................................................................. 14
5.1 Security Concerns........................................................................................................................14
5.1.1
Wired Equivalent Privacy (WEP)...........................................................................................14
5.1.2
Wi-Fi Protected Access (WPA/WPA2) ..................................................................................14
5.1.3
Cisco Fast Secure Roaming (FSR) .......................................................................................14
5.2
Using Virtual LANs.......................................................................................................................15
5.3
MAC Filtering and Authentication................................................................................................15
5.4
Firewalls and Traffic Filtering.......................................................................................................15
5.5
Virtual Private Networks (VPNs) .................................................................................................15
6.0 Avaya Wireless Telephones and Subnets...................................................... 16
6.1 Subnets and IP Telephony Server Interfaces.............................................................................16
6.2
Network Performance Requirements..........................................................................................17
7.0
Conclusion ........................................................................................................ 19