hi! i was wondering whats actually a QOS and whether we do need them? And if we really do need them, how do i set them in my 3Com Wireless Modem Router - 3CRWDR101A-75
BE - Best Effort Forwarding 0%
AF1x to AF4x - Assured Forwarding, provides delivery of packets in four independently forwarded AF classes. Within each AF class, an IP packet can be assigned one of three different levels of drop precedence. 0%
EF - Expedited Forwarding, is intended to provide low delay, low jitter and low loss delivery of packets. 0%
How many percent should i set them and the reason?