HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual page 850

Using the Web Browser Interface for Advanced Configuration Tasks
Configuring Quality of Service
14-50
Figure 14-36. Specifying the Maximum Bandwidth Guaranteed to a Queue
The documentation for your VoIP application may instruct you how to
determine the necessary bandwidth. You can also see Chapter 7: Setting
Up Quality of Service for some general guidelines.
Click Next.
7. You will now move to the DSCP Outbound Marking window. Because
signaling traffic, as well as the VoIP packets themselves, must receive
priority handling, you should mark signaling traffic with a ToS value. You
can accept the default value 26 (for assured forwarding class 31) or enter
any value between 0 and 63. However, you should enter a value for at least
AF31. (See Table 14-2.)
The QoS wizard automatically configures the router to mark SIP signaling
traffic with this value. If your VoIP devices do not use SIP, then you must
configure the router to mark the signaling traffic from the CLI. See
Chapter 7: Setting Up Quality of Service.