SMC Networks Barricade SMC7908VoWBRA2 - Manual (Page 125)

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QoS
The QoS (Quality of Service) function allows you to differentiate VoIP
traffic and provide it with high-priority forwarding service. In addition,
you can specify the outgoing VC of VoIP packets to further guarantee the
voice quality.
Parameter Description
Enable or disable QoS
module function
Check to enable or disable this function.
BE Best Effort, network forwards as many packets as
possible in as reasonable a time as possible. This is
the default per-hop behavior (PHB) for packet
transmission.
AF1x
AF2x
AF3x
AF4x Set the percentage for four different types of
Assured Forwarding.
EF Expedited Forwarding, is intended to provide low
delay, low jitter and low loss delivery of packets.