Wireless/Redundant Edge Services xl Module Management and Configuration Guide WS.01.03 or greater

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Radio Port Configuration
Configuring WMM
SpectraLink Voice Priority (SVP)
To raise voice quality over a wireless network, SpectraLink Corporation has
developed a de facto industry QoS mechanism called SpectraLink Voice
Priority (SVP). SVP is implemented in wireless phone handsets, wireless APs
or RPs, and SpectraLink servers. This IEEE 802.11-compliant mechanism
minimizes latency for voice traffic by establishing priority queues for voice
packets and by increasing the probability that all voice packets are transmitted
in a predictable and timely manner.
Any transmission delays can have an adverse effect on voice traffic. In addition
to priority queuing, SVP-enabled RPs and phone handsets transmit voice
packets in a coordinated fashion, using a zero backoff interval and thereby
eliminating delays introduced by random backoff intervals.
The RPs 210, 220, and 230 are all SVP compliant. You enable this feature in the
WLAN configuration. See Chapter 3: Wireless Local Area Networks (WLANs).