Configuring Quality Of Service; Configuring Class-Of-Service Qos - AudioCodes Mediant 800B User Manual

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3. Click Apply, and then save your settings to flash memory.
12.9

Configuring Quality of Service

This section describes how to configure Layer-2 and Layer-3 Quality of Service (QoS).

12.9.1 Configuring Class-of-Service QoS

The QoS Settings page lets you configure Layer-3 Class-of-Service Quality of Service
(QoS). This configures Differentiated Services (DiffServ) values for each CoS. DiffServ is
an architecture providing different types or levels of service for IP traffic. DiffServ
(according to RFC 2474), prioritizes certain traffic types based on priority, accomplishing a
higher-level QoS at the expense of other traffic types. By prioritizing packets, DiffServ
routers can minimize transmission delays for time-sensitive packets such as VoIP packets.
You can assign DiffServ to the following class of services (CoS):

Media Premium: RTP packets sent to the LAN

Control Premium: Control protocol (SIP) packets sent to the LAN

Gold: HTTP streaming packets sent to the LAN

Bronze: OAMP packets sent to the LAN
The mapping of an application to its CoS and traffic type is shown in the table below:
Application
Debugging interface
Telnet
Web server (HTTP)
SNMP GET/SET
Web server (HTTPS)
RTP traffic
RTCP traffic
T.38 traffic
User's Manual
'Fax Relay Rx/Tx Timeout'
Table 12-16: Traffic/Network Types and Priority
Traffic / Network Types
Management
Management
Management
Management
Management
Media
Media
Media
Mediant 800B Gateway & E-SBC
Class-of-Service (Priority)
Bronze
Bronze
Bronze
Bronze
Bronze
Media Premium
Media Premium
Media Premium
166 Document #: LTRT-10632