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Aegis5
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ok here it is, to solve once and for all what is the prefered standard:

Choose your preferred ethernet wiring standard:
TIA568-A
TIA568-B
I don't really care b/c it only matters that I use the same at both ends
I don't really care b/c I will never install ethernet wiring
Huh?

1/27/2002 6:53:14 PM

kontalonis
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Why in the hell is this in "Feedback Forum?"

1/27/2002 7:07:43 PM

Aegis5
All American
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that's where you put new ideas for polls, if i'm not mistaken

1/27/2002 7:32:52 PM

sunkissed81
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true, but polls that would be interesting for the first page... i think about 90% of the people would say I don't really care b/c I will never install ethernet wiring or Huh?
this needs to be in tech talk, they're the only ones who would answer this

[Edited on January 27, 2002 at 7:42 PM. Reason : caught my own grammar mistake]

1/27/2002 7:41:48 PM

ironmike
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good call sunkissed

1/27/2002 9:42:59 PM

InsaneMan
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I dont know the difference between A and B, nor do I give a fuck.

1/27/2002 10:58:01 PM

scud
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     9.1 Standard EIA/TIA T568A
  (also called ISDN, previously called EIA)

        Pin  Wire Color
        ===  ==========
         /--T3  1   White/Green
   Pair3 \--R3  2   Green
        /----------T2  3   White/Orange
       /         /-R1  4   Blue
 pair2 \   pair1 \-T1  5   White/Blue
        \----------R2  6   Orange
         /--T4  7   White/Brown
   pair4 \--R4  8   Brown


     9.2 Standard EIA/TIA T568B
  (also called AT&T specification, previously called 258A)

         /--T2  1   White/Orange
   pair2 \--R2  2   Orange
        /----------T3  3   White/Green
       /         /-R1  4   Blue
 pair3 \   pair1 \-T1  5   White/Blue
        \----------R3  6   Green
         /--T4  7   White/Brown
   pair4 \--R4  8   Brown

Quote :

"

Gigabit Ethernet update

Gigabit Ethernet is being designed to accommodate a wide variety of physical layer topologies:

Committee Specification Application
IEEE 802.3z 1000BASE-CX Supports interconnection of equipment clusters
1000BASE-SX Supports horizontal building cabling
1000BASE-LX Supports backbone cabling and campus interconnections.
IEEE 802.3 1000BASE-T Supports 1 Gb/s Ethernet over 4-pair TIA TSB-95 compliant Category 5 UTP cabling for up to 100 meters.
Published June 1999

10 Gbit/s Ethernet

The IEEE802.3ae committee is hard at work on a 10Gigabit Ethernet (10GE) over both single and multimode fiber. It will include both a WAN PHY at OC-192c/SDH and a LAN PHY @ 10 Gb/s. 10GE is expected to be 3X the cost of 1GE, but of course 10X the performance. See www.10gigabit-ethernet.com for more information. 10GE should help promote a merging of 802.3 commercial premises networks and WAN networks. A published standard is expected in 2002.

1. Preserve 802.3/Ethernet frame format at the MAC Client Service Interface

2. Meet 802 Functional Requirements with the possible exception of Hamming Distance

3. Preserve min and max frame size of current 802.3 standard (note: jumbo frames excluded)

4. Support Full-Duplex (FDX) operation only

5. Support star-configured structured cabling

6. Specify an optional Media Independent Interface

7. Support 802.3ad Link Aggregation

8. Support either 10.00 Gbit/s or 9.584640 Gbit/s operation

9. Support media selected from IS 11801 2nd Edition

10. Provide a family of Physical Layer (PHY) specifications to support link distances of :

at least 2 km over SMF

at least 10 km over SMF

at least 40 km over SMF

at least 100m over installed MMF

at least 300m over (new) MMF

TSB-95 Update: Formerly SP-4194, TSB-95 is designed to provide expected performance criteria for those new measurements now determined to be important for new networking transmission methods. For example, Gigabit Ethernet requires a minimum level of performance for return loss, ELFEXT, power sum ELFEXT, propagation delay, and delay skew. It is expected that all existing installed category 5/Class D links will meet these specifications. However, because it is a TSB, it is not a normative requirement. TSB-95 provides guidelines to network designers as to what the minimum installed performance of legacy category 5 links can be expected.

Status Update: TSB-95 was approved at the November Reno NV TIA meeting.

TIA 568-A-5 Update: Category 5E requirements are specified in TIA 568A5. It was approved at the November Reno NV 1999 TIA meeting. None of the Basic Link or Channel performance numbers for any measured parameters have changed since the previous drafts. Category 5E requirements are being built in to TIA 568B.

TIA 568B: TIA 568B is the new generic cabling standard. TIA 568B includes many updates that structured cabling specialists need to be aware of. Changes that impact cable testing include:

Delay Skew Specified
Return Loss is specified to support bi-directional signaling protocols.
NEXT and Return Loss of Patch Cord material becomes significant and is specified explicitly.
Improved NEXT and Insertion Loss enables higher cabling system bandwidths.
ELFEXT (Equal Level Far End Crosstalk) Requirement added for Gigabit Ethernet and future multi-pair signaling protocols.
Field tester Accuracy Level IIe defined
Category 5 is obsolete with the publication of ANSI/EIA/TIA-568-B.1
TIA 568B is composed of three parts.
TIA 568B.1 This is a major new standard release that updates and replaces the following standards and bulletins: TSB67, TSB72, TSB75, TSB95, TIA568A, TIA568A addendum's 1,2,3,4, and 5, and TIA ScTP (PN-3193 Interim standard). Key additions include Category 5E performance levels, 50/125mm fiber and allowance for alternate fiber connectors other than the SC. This standard, which is expected to be complete in the second quarter of 2001, eliminates support for Category 5 in horizontal cabling. Category 5E becomes the minimum accepted performance level.

TIA 568B.2 Technical content and component requirements for 100 ohm twisted-pair cabling that is referenced by TIA 568-B.1. This document's completion is tied tightly to 568B.1, and is expected in mid 2001.

TIA 568B.3 Technical content on optical fiber cabling that is referenced by TIA 568-B.1. This document is complete and published. It can be obtained from Global Engineering.
"

Basically, ANSI/TIA/EIA 568-A Defines CAT3-5 cabling
and 568-B Defines CAT 5E,6 and above

1/27/2002 11:24:49 PM

kontalonis
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oh I thought you were actually wanting to take the poll in the thread, my bad

1/27/2002 11:37:38 PM

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