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*SpectraLink handset models 8020/8030 and their OEM derivates are verified compatible with

the WLAN hardware and software identified in the table. Throughout the remainder of this

document they will be referred to collectively as "SpectraLink Wireless Telephones" or

"handsets".

** ONLY Release 3.0 capable handsets support WPA2-Enterprise, Wi-Fi Standard QoS, and

CCXv4. Release 3.0 is not be available for Polycom handsets connecting to traditional PBXs.

Known Limitations

PN: 1725-36192-001_H

Cisco Wireless LAN Controllers with 1100, 1130, 1140, 1200, 1230, 1240, 1250 APs



Push-to-talk (PTT) audio quality may be impaired on Cisco 1140

and 1250 802.11n APs with version 5.2.193.0 certified software.

All customers requiring PTT with these models should pilot test

this feature at their deployment site.

Heavy multicast, broadcast or push-to-talk (PTT) traffic may



impair voice quality.

Please refer to the Polycom Deploying Enterprise-Grade Wi-Fi Telephony

white paper. This document covers the security, coverage, capacity

and QoS considerations necessary for ensuring excellent voice quality

with enterprise Wi-Fi networks.

For more detailed information on wireless LAN layout, network

infrastructure, QoS, security and subnets, please see the Best Practices

Guide for Deploying SpectraLink 8020/8030 Wireless Telephones. This

document identifies issues and solutions based on Polycom's

extensive experience in enterprise-class Wi-Fi telephony. It provides

recommendations for ensuring that a network environment is

adequately optimized for use with SpectraLink 8020/8030 Wireless

Telephones.

These two white papers are available at:

http://www.polycom.com/products/voice/wireless_solutions/wifi

_communications/handsets/spectralink_8020_wireless.html