In access networks, Huawei recommends prioritizing real-time voice (VoIP) traffic with the highest forwarding priority (typically EF, 802.1p 5) to ensure low latency and jitter. IPTV/video is generally next (AF classes), while gaming and general Internet browsing are treated lower than voice. Therefore, VOIP receives the top priority to protect call quality under congestion.
[References: HCIP-Access V2.5 – QoS Service Planning on PON; Huawei OLT QoS Feature Guide – Traffic Classes and 802.1p/DSCP Mapping., , ]
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