AudioCodes Mediant 600 - Quality of Service Parameters

Version 6.4 547 March 2012
SIP User's Manual A. Configuration Parameters Reference
A.1.4 Quality of Service Parameters
The Quality of Service (QoS) parameters are described in the table below.
The device allows you to specify values for Layer-2 and Layer-3 priorities by assigning
values to the following service classes:

Network Service class – network control traffic (ICMP, ARP)

Premium Media service class – used for RTP Media traffic

Premium Control Service class – used for Call Control traffic

Gold Service class – used for streaming applications

Bronze Service class – used for OAMP applications
The Layer-2 QoS parameters enable setting the values for the 3 priority bits in the VLAN
tag (IEEE 802.1p standard) according to the value of the DiffServ field found in the packet
IP header. The Layer-3 QoS parameters enables setting the values of the DiffServ field in
the IP Header of the frames related to a specific service class.
Table A-4: QoS Parameters
Parameter Description
Layer-2 Class Of Service (CoS) Parameters (VLAN Tag Priority Field)
Web: Network Priority
EMS: Network Service Class Priority
[VLANNetworkServiceClassPriority]
Defines the VLAN priority (IEEE 802.1p) for Network
Class of Service (CoS) content.
The valid range is 0 to 7. The default value is 7.
Web: Media Premium
EMS: Premium Service Class Media Priority
Priority
[VLANPremiumServiceClassMediaPriority]
Defines the VLAN priority (IEEE 802.1p) for the
Premium CoS content and media traffic.
The valid range is 0 to 7. The default value is 6.
Web: Control Premium Priority
EMS: Premium Service Class Control Priority
[VLANPremiumServiceClassControlPriority]
Defines the VLAN priority (IEEE 802.1p) for the
Premium CoS content and control traffic.
The valid range is 0 to 7. The default value is 6.
Web: Gold Priority
EMS: Gold Service Class Priority
[VlanGoldServiceClassPriority]
Defines the VLAN priority (IEEE 802.1p) for the
Gold CoS content.
The valid range is 0 to 7. The default value is 4.
Web: Bronze Priority
EMS: Bronze Service Class Priority
[VLANBronzeServiceClassPriority]
Defines the VLAN priority (IEEE 802.1p) for the
Bronze CoS content.
The valid range is 0 to 7. The default value is 2.
Layer-3 Class of Service (TOS/DiffServ) Parameters
Web: Network QoS
EMS: Network Service Class Diff Serv
[NetworkServiceClassDiffServ]
Defines the Differentiated Services (DiffServ) value
for Network CoS content.
The valid range is 0 to 63. The default value is 48.
Note: For this parameter to take effect, a device
reset is required.
Web: Media Premium QoS
EMS: Premium Service Class Media Diff Serv
[PremiumServiceClassMediaDiffServ]
Defines the DiffServ value for Premium Media CoS
content (only if IPDiffServ is not set in the selected
IP Profile).
The valid range is 0 to 63. The default value is 46.
Notes:

The value for the Premium Control DiffServ is