Hi Phil. Thx for repeating what's been said and written several times. ;)
It's all about noise and interferences and EMI/RFI and poor grounding and poor shielding and poluted power lines and and and.... Your recommendation about avoiding CAT6 doesn't have a basis. The cables are 100% compatible. And these better cables do have a very positve impact on the pysical side. Shorter cables and signal refreshing at a shorter distance towards the client will obviously also have a positive impact. Let me quote from here: http://www.broadbandutopia.com/caandcaco.html > > Why do I need all the bandwidth of category 6? As far as I know, there > is no application today that requires 200 MHz of bandwidth. > > Bandwidth precedes data rates just as highways come before traffic. > Doubling the bandwidth is like adding twice the number of lanes on a > highway. The trends of the past and the predictions for the future > indicate that data rates have been doubling every 18 months. Current > applications running at 1 Gb/s are really pushing the limits of > category 5e cabling. As streaming media applications such as video and > multi-media become commonplace, the demands for faster data rates will > increase and spawn new applications that will benefit from the higher > bandwidth offered by category 6. This is exactly what happened in the > early 90s when the higher bandwidth of category 5 cabling compared to > category 3 caused most LAN applications to choose the better media to > allow simpler, cost effective, higher speed LAN applications, such as > 100BASE-TX. Note: Bandwidth is defined as the highest frequency up to > which positive power sum ACR (Attenuation to Crosstalk Ratio) is > greater than zero. > > What is the general difference between category 5e and category 6? > > The general difference between category 5e and category 6 is in the > transmission performance, and extension of the available bandwidth from > 100 MHz for category 5e to 200 MHz for category 6. This includes better > insertion loss, near end crosstalk (NEXT), return loss, and equal level > far end crosstalk (ELFEXT). These improvements provide a higher > signal-to-noise ratio, allowing higher reliability for current > applications and higher data rates for future applications. > > Will category 6 supersede category 5e? > > Yes, analyst predictions and independent polls indicate that 80 to 90 > percent of all new installations will be cabled with category 6. The > fact that category 6 link and channel requirements are backward > compatible to category 5e makes it very easy for customers to choose > category 6 and supersede category 5e in their networks. Applications > that worked over category 5e will work over category 6. > > What does category 6 do for my current network vs. category 5e? > > Because of its improved transmission performance and superior immunity > from external noise, systems operating over category 6 cabling will > have fewer errors vs. category 5e for current applications. This means > fewer re-transmissions of lost or corrupted data packets under certain > conditions, which translates into higher reliability for category 6 > networks compared to category 5e networks. > > When should I recommend or install category 6 vs. category 5e? > > From a future proofing perspective, it is always better to install the > best cabling available. This is because it is so difficult to replace > cabling inside walls, in ducts under floors and other difficult places > to access. The rationale is that cabling will last at least 10 years > and will support at least four to five generations of equipment during > that time. If future equipment running at much higher data rates > requires better cabling, it will be very expensive to pull out category > 5e cabling at a later time to install category 6 cabling. So why not do > it for a premium of about 20 percent over category 5e on an installed > basis? > > If I had to choose I'd go for a better cable. We're talking about peanuts here. Cheers P.S: The fiber solution could in fact be an interesting alternative. -- soundcheck ::: ' Touch Toolbox 3.0 and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck ------------------------------------------------------------------------ soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=91322
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