Polycom® RealPresence Collaboration ServerVirtual Edition Administrator’s Guide
15-14 Polycom, Inc.
10 If required, click the QoS tab.
Quality of Service (QoS) is important when transmitting high bandwidth audio and
video information. QoS can be measured and guaranteed in terms of:
• Average delay between packets
• Variation in delay (jitter)
• Transmission error rate
DiffServ and Precedence are the two QoS methods supported by the Collaboration
Server. These methods differ in the way the packet’s priority is encoded in the packet
header.
The Collaboration Server’s implementation of QoS is defined per Network Service, not
per endpoint.
11 View or modify the following fields:
The routers must support QoS in order for IP packets to get higher priority.
Table 15-8 Default IP Service – Conferencing – QoS Parameters
Field Description
Enable Select to enable the configuration and use of the QoS settings.
When un-checked, the values of the DSCP (Differentiated Services
Code Point) bits in the IP packet headers are zero.