|
|
|
|
Joined: Oct 2006
Posts: 1,417 Likes: 7
Member
|
|
Member
Joined: Oct 2006
Posts: 1,417 Likes: 7 |
Doesn't twisting offer an advantage over non-twisted pairs for longer cable runs even for analog and digital voice applications? The 4 pair CAT3 cable I've used has had conductor pairs twisted to varying degrees. Even 25 pair count has loose twisted conductors.  For analog and digital voice, my thought is CAT3. For data, CAT 5E would seem to be good for a hotel/motel. Back when deregulation started, and sparkies were all excited to run phone wiring, there was a horror story about a electrical supply house selling a bunch of silver satin line cord to an electrician who installed it in a new 12-plex apartment building. When the time came to heat up the services, they couldn't get them to work. Seems the flat untwisted line cord acted like a giant capacitor. This resisted the voice frequencies and prevented conversations. A voice grade twisted pair has enough twists to knock out the capacitance that keeps voice frequencies from getting through. A data grade twisted pair has more twists, and in the right places, to allow high frequency data through.
|
|
|
Visit Atcom to get started with your new business VoIP phone system ASAP
Turn up is quick, painless, and can often be done same day.
Let us show you how to do VoIP right, resulting in crystal clear call quality and easy-to-use features that make everyone happy!
Proudly serving Canada from coast to coast.
|
|
|
|
Joined: May 2002
Posts: 17,742 Likes: 36
Member
|
|
Member
Joined: May 2002
Posts: 17,742 Likes: 36 |
there's still miles of untwisted quad wire out there that works just fine.
Retired phone dude
|
|
|
|
|
Joined: Feb 2005
Posts: 12,354 Likes: 4
Member
|
|
Member
Joined: Feb 2005
Posts: 12,354 Likes: 4 |
Back when deregulation started, and sparkies were all excited to run phone wiring, there was a horror story about a electrical supply house selling a bunch of silver satin line cord... Anybody remember 8 conductor silver satin? Ran across an office building a long time ago where it was used for their Merlin and data wiring.  -Hal
CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
|
|
|
|
|
Joined: Jul 2008
Posts: 63
Member
|
|
Member
Joined: Jul 2008
Posts: 63 |
I service the phone cabling for 6 large hotels in NJ, all the cables to rooms are 3 pair cat 3, this seem to work the best for me each hotel has about 400-500 guest room each. Do not splice any room cables this will bite you back later
|
|
|
|
|
Joined: Feb 2014
Posts: 659
Moderator-1A2
|
|
Moderator-1A2
Joined: Feb 2014
Posts: 659 |
I have a spool of 6 conductor silver satin that was given to me. It mainly collects dust. I occasionally make a line cord for a partner set or SLT that's no more than 6-7 feet long, but even that's pretty rare.
|
|
|
|
|
Joined: Dec 2005
Posts: 9,181 Likes: 9
Spam Hunter
|
|
Spam Hunter
Joined: Dec 2005
Posts: 9,181 Likes: 9 |
We used to use 8 conductor satin cords to connect D4 channelbanks to LEC demarcs.
I Love FEATURE 00
|
|
|
|
Forums84
Topics94,518
Posts639,976
Members49,850
| |
Most Online5,661
May 23rd, 2018
|
|
|
0 members (),
327
guests, and
43
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
|
|
|
