Thanks for the info. when I ping some of the clients the ccq does go up higher. What is a level that should be the minimum and still have good Internet connection?
The higher the better in general. 100% is what your should try to achieve. But it also depends on what kind of quality you want to serve your clients.
Gaming really needs a ccq of close to, or 100% (with low latency) and Voip (+ Skype) at least above 90% and browsing and streaming videp/radio can do with at least 70 to 80%. Downloads can do with much less. It only takes longer to download something. (And the overall AP-CPE network gets occupied due this much more.)
Low ccq's means lots of digital packages get lost during transport. They have to be resend which delays the total usable data througput. For ´real time´ traffic it is a definite killer.
And like others already mentioned, the ccq should scale up when traffic is on the link. But the link also needs to be able to sustain high ccq at the higher data rates. If not AP starts to step up and down the data rates which comes with small disruption of the data flow and also creates more overhead. In general the data throughput suffers.
If you find you ccq's never reach the high value try to set the AP's data rates lower. Disable 54M, 48M or even lower values until you see good ccq's. Run a ´flood ping´ to ´test´ the links for the best settings.
Now, in an ideal world your network would also be in an open environment without bounced and disturbed signals and no other's using same band. A ´clean´ spectrum.
In real world this is not the case. Now you will find that although some client seem to have good signal strength their ccq stays low. Interference or multipath receipt can be an issue here. And both of these can differ per client.
So to find out if you client suffers from other signals runs a wireless scan at his antenna.
If you also want to find out about multipath receipt interferences or other disturbing signals (high power radio stations, elec. transformers, high voltage line, microwaves, cordless phone etc.) than you need a spectrum scanner.
Hope this helps...
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Rudy R. Puister
WISP operator based on MT routerboard & ROS.