Version 6.2 47 February 2011
Installation Manual 3. Configuring the Device
3.2.1.5.3 Defining VoIP Traffic Matching Rules
Once you have defined the VoIP Tx traffic shaping class (e.g., “VOIP Tx”) in 'Defining VoIP
Tx Shaping Class' on page 50, you n
eed to define traffic matching rules (QoS outbound
rules) for VoIP RTP media traffic as well as for SIP signaling traffic, and then assign the
shaping class to these traffic rules.
The following matching rules need to be configured (assuming standard ports are used):
SIP TCP connections:
• Incoming TCP connection to WAN port 5060-5061 must be matched to Traffic
Shaping class “VOIP Tx”. Outbound packets sent on this connection will originate
from port 5060.
• Outbound TCP connections from WAN port 5060-5061 sent to any destination
must be matched to Traffic Shaping class “VOIP Tx”. Outbound packets on this
connection will originate from an arbitrary port, but will be destined to port 5060-
5061.
SIP UDP connections: Outbound UDP packets sent from WAN port 5060 to any
destination must be matched to Traffic Shaping class “VOIP Tx”.
RTP UDP: Outbound UDP packets sent from WAN port 7000-8000 to any destination
must be matched to Traffic Shaping class “VOIP Tx”.
¾ To define VoIP traffic matching rules:
1. Open the ‘Match Rules’ page (Configuration tab > Data menu > QoS submenu >
Match Rules).
Figure 3-18: Match Rules Page
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