Matrix SPARSH VP710 User Guide
581
Voice QoS
In order to make VoIP transmissions intelligible to receivers, voice packets should not be dropped, excessively
delayed, or made to suffer varying delay. DiffServ model can guarantee high-quality voice transmission when the
voice packets are configured to a higher DSCP value.
Video QoS
To ensure acceptable visual quality for video, video packets emanated from the IP phone should be configured with
a high transmission priority.
SIP QoS
SIP protocol is used for creating, modifying and terminating two-party or multi-party sessions. To ensure good voice
quality, SIP packets emanated from IP phone should be configured with a high transmission priority.
DSCPs for voice and SIP packets can be specified respectively.
Wi-Fi QoS
Wi-Fi Multimedia (WMM) is based on the IEEE 802.11e standard and provides basic Quality of service (QoS)
features to wireless networks. QoS enables Wi-Fi access points to prioritize the traffic and optimizes the way
shared network resources are allocated among different applications.
For voice and SIP packets, the IP phone obtains DSCP info from the network policy if LLDP feature is
enabled, which takes precedence over the manual settings. For more information on LLDP, refer to
Layer Discovery Protocol (LLDP)”
Procedure
QoS can be configured using the configuration files or locally.
Configuration File
<MAC>.cfg
Configure the DSCPs for voice
packets, SIP packets and video
packet.
Configure the WMM feature in the
wireless network.
For more information, refer
“Appendix D - Configuration
Parameters”
Local
Web User Interface
Configure the DSCPs for voice
packets, SIP packets and video
packets.
Navigate to:
http://<phoneIPAddress>/servlet?
m=mod_data&p=network-adv&q
=load
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