Panasonic KX-NS500, Installation Manual

Page: 313 / 338

8.1.8 QoS (Quality of Service)
Some routers permit the configuration of priority control features. This allows the router to give higher priority
to voice packets and lower the rate of loss and delays during transmissions, hence improving speech quality.
It is strongly recommended that you use this feature, especially in networks where traffic is heavy.
Typically, a router identifies what packets to pass in priority by checking the value in the ToS field of the header
of IP packets. The V-IPGW card has the ability to set the ToS field of outgoing voice packets. When the card
is appropriately configured, the router can give voice packets from the card higher priority.
Consult your network administrator when setting the ToS field, as the setting value must conform to the
router’s specifications.
Note
•
Some switches also permit the configuration of priority control features. For more information, consult
your network administrator.
•
To adjust the value in the ToS field, refer to "9.11 PBX Configuration—[1-1]
Configuration—Slot—Shelf Property—V-IPGW" in the PC Programming Manual.
Installation Manual 313
8.1.8 QoS (Quality of Service)