STP, FTP, SFTP

Hi
Need help for the following questions.
1, If I use FTP or SFTP to run cable thru wall to hub, is the technique the same as running UTP thru wall to hub? Is there anything that I need to be cautious?
2, I heard that FTP or STP need to be grounded at the hub. How to do that? Do I just crimp RJ45 to the FTP and plug in to the hub, and it has then been grounded already? Need I do anything special for grounding at this part?
3, I found that some shielded RJ45 has a part called "Insert". What is it?
4, When crimping shielded RJ45, is it totally the same as crimping unshielded RJ45?
5, When preparing a STP network using FTP, is there anything which is handled specially comparable to a UTP network?
6, What is a block? Before linking up the cables to patch panel, do I need a block?
Appreciate for any help so much!!!
Leo

1. RE: STP, FTP, SFTP
lbyard May-19-00 02:49 PM
In response to message 0

Leo, with exception of some work several years ago with IBM token ring networks, I have not worked with STP and I am researching an answer to your post. This will take some time (probably weeks). As I have read so far, STP will pick-up more noise than UTP, if the shield is not grounded properly (if shielded cable is grounded at both ends, a dangerous ground-loop condition can develop from a direct or nearby lightning strike). I have extensive experience (and education) with other kinds of shielded cable. As a result, I have always favored shielded over unshielded cable for radio frequency applications. However, my experience with CAT 5 UTP in recent years shows that it is more reliable than shielded thinwire Ethernets and that it quite robust with respect to noise immunity if basic wiring procedures are followed. So, if you are in an average environment (no arc welders, etc.; not in an airport or hospital, etc.) I would suggest using UTP. It is very reliable and cheaper. I would use shielded cable only where it is absolutely needed. Fiber optic cable may be a better choice in extremely noisy environments. Larry