FredWagner
MIS
In our organization (3000+PCs) most floors and buildings were wired by 'in house' talent, in many cases with in-wall wiring extended all the way to the PC, and excess length folded like rope, with kinks in the ends, rather than terminating in jack, with an appropriate length flexible drop cable to the PC.
In many other cases, I've found a wall jack a yard or two from a PC, with a 30 foot drop cable coiled into a donut, with additional length wound serpentine around the toroid core formed by the coiled cable. I'm trying to get these practices stopped and fixed, but my experience and knowledge isn't sufficient - they want WRITTEN documentation where it says not to do these things. Now that they've upgrading the Network from 100BaseT to Gigabit, these wiring gaffes are starting to cause real problems.
The only sources I've found using Google I've found mentions a mininum 1" or 2" bend radius in cables (says nothing about making toroids out of them), and only that kinking cables permanently damages them - not that it harms network performance, etc. Last week I was updating software on some PCs, and one was VERY slow across the network - workers near it mentioned that it is always slow, and that when one of them is working on that PC, ALL of the PCs get slow. This was the unit with the toroidal drop cable. The one in the cubicle next to it had the tightly kinked in-wall cable connected to the PC.
I'm challenged with finding an authoritative source that says these are bad practices, and what the results are likely to be. Just telling them that understanding electricity and electronics make is obvious isn't enough.
To me this is like expecting a Driving manual to have a section where it tells you not to drive off bridges, into wall, or into other cars. Can anyone provide me some ammo in this discussion ?
Fred Wagner
In many other cases, I've found a wall jack a yard or two from a PC, with a 30 foot drop cable coiled into a donut, with additional length wound serpentine around the toroid core formed by the coiled cable. I'm trying to get these practices stopped and fixed, but my experience and knowledge isn't sufficient - they want WRITTEN documentation where it says not to do these things. Now that they've upgrading the Network from 100BaseT to Gigabit, these wiring gaffes are starting to cause real problems.
The only sources I've found using Google I've found mentions a mininum 1" or 2" bend radius in cables (says nothing about making toroids out of them), and only that kinking cables permanently damages them - not that it harms network performance, etc. Last week I was updating software on some PCs, and one was VERY slow across the network - workers near it mentioned that it is always slow, and that when one of them is working on that PC, ALL of the PCs get slow. This was the unit with the toroidal drop cable. The one in the cubicle next to it had the tightly kinked in-wall cable connected to the PC.
I'm challenged with finding an authoritative source that says these are bad practices, and what the results are likely to be. Just telling them that understanding electricity and electronics make is obvious isn't enough.
To me this is like expecting a Driving manual to have a section where it tells you not to drive off bridges, into wall, or into other cars. Can anyone provide me some ammo in this discussion ?
Fred Wagner