Specifications

Product Description

IP Office Release 7.0

Page 162

Issue 22.a.- (21 March 2011)

Standards based Quality of Service support

Since Summer 2010 IP Office R6 Maintenance release a new software was made available for the 3641 and

3645 handsets.

This software allows to use open standard Quality of Service mechanisms based on WMM standards.

Wi-Fi Multimedia (WMM) is a specification and certification program created by the Wi-Fi Alliance, based upon

the Enhanced Distributed Channel Access (EDCA) mechanism defined in the 802.11e standard. Avaya handsets

support two QoS methods; the proprietary SpectraLink Voice Priority (SVP) developed to meet a gap which

existed before 802.11e ratification and the standards-based Wi-Fi Alliance Wireless Multi-Media (WMM). SVP or

WMM-enabled APs and an AVPP are required for all Avaya wireless telephone installations, even if the WLAN is

being used only for voice. Without a method of prioritization for voice packets, the lack of a controlled delivery

method will result in poor audio quality, reduced capacity, poor handoffs and/or poor battery life even with only

voice devices on the network. In a mixed configuration using the AVPP and WMM refer to the Configuration and

Deployment Guides for Polycom VIEW Certified and Field Verified WLANs for specific configuration

requirements.

Basic WMM implementation in access points does not include Unscheduled-Automatic Power Save Delivery

(U-APSD) and Call Admission Control (CAC), which are also defined in the 802.11e standard. Therefore, the

AVPP is required to ensure the timing and delivery of Avaya voice packets, which is critical as the user hands off

between APs and for improved battery life. The AVPP also provides call admission control and allows the

number of calls per AP to be configured.

Please also refer to the Deployment Guide for Avaya-Polycom VoWiFi Telephones available on

support.avaya.com