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Originally Posted by monkeyboy2222
The amount of ingress and Egress isn't going to change that drastically at peak times though? arnies don't fall off of taps at 5.30 then screw themselves back later on! as for the environment, at the moment the weather doesn't change dramatically enough for it to affect the levels at peak times.
With my basic knowledge of physic   cold weather will lower the resistance in the copper core of the cabling (lower temp = less atomic vibration = easier movment of electrons) so in theory *cough cough* levels should be better now that in summer.
but also at this time of year there is a loooot of moisture which is never a good thing.
and the upstream - modems do change upstream if the cant get a lock - you just said they do lol. |
It's not about what happens in the network, people get home and start turning their TVs on, using their microwaves, talking on their DECT phones, etc, etc, etc. The network doesn't necessarily get any more or less resilient to noise, there's just more of it around at these times, fact.
The cabling isn't the main cause of environmental variance it's the amplifiers and the lasers, both tend to be more efficient in cooler weather and so deliver higher power which can be every bit as bad as low depending how network is running. Higher doesn't necessarily equal better. Some amps have temperature detection circuits which adjust gain to compensate for the weather. It's not a major issue in this country at this time of year however inside cabinets can get really hot in summer.
You claimed that modems change on a clogged upstream, that's not necessarily true it has to be *really* clogged and not with normal traffic but modems trying to get a lock as there are dedicated slots provided as part of the upstream MAPs for UCD acknowledgement and for the unsolicited traffic that modems initially send to request a SID. Modems tend to be rather attached to upstreams and can take hours to give up on one if they do at all. Depending on segmentation they may not even have another upstream to choose from.