Polycom SpectraLink 1725-36033-001 - Manual (Page 34)

SpectraLink 8000 SVP Server: Administration Guide for SIP
34 PN: 1725-36033-001_G.doc
When forwarding packets, the SVP Server overwrites the received DSCP value. The
final DSCP tag for packets in each of the traffic classes are assigned a DSCP value
based on the following rules and per the table below.
• Packets are tagged with the corresponding Traffic Class value entered in the
QoS Configuration menu if the value for the Traffic Class is set to something
other than Default.
• Otherwise, packets are tagged with the Administration Traffic Class value (the
first item in the QoS Configuration Menu) if the corresponding Traffic Class is set
to Default and the Administration Traffic Class value is set to something other
than Default.
• Finally, packets are tagged with the Default value of the corresponding Traffic
Class if both the corresponding Traffic Class and the Administration Traffic Class
values are set to Default. The following table lists the Default values for the
DSCP tags.
Traffic Class Default
Administration Priority Low 0
WT (In call) Priority High 4
WT (Standby) Priority Med 0
RTP Priority High 4
PBX Priority Med 0
Inter-SVP2 Priority Med 0
Default DSCP settings will mark traffic for Best Effort handling under
normal circumstances. Please consider changing these values
based on the recommended QoS settings from your network
hardware manufacturer to achieve prioritization for your voice traffic.