Allied-telesis AT-TS90TR Bedienungsanleitung PDF herunterladen (Seite 28)

AT-TS90-TR 10Base-T Switch With 100Base-T Access

100BASE-TX Cable. 100BASE-TX connections must be made with

category 5 cables only. Using any other category or a poor quality cable for

a 100BASE-TX connection will potentially have high error rates or will

not move data at all.

The ﬁve common modular cable speciﬁcations and their applicability to

10BASE-T and 100BASE-TX networks are shown in Table 2.

Table 2: Twisted Pair Cable

Cable

Cat

Cable

Description

Character

Speciﬁcation Twist/Foot

10BASE-T

OK?

100BASE-TX

OK?

1 Unshielded

Untwisted

N/A CCITT None NO! NO!

2 Individual

UTP

100Ω ±30Ω RS232

1BASE5 AT&T

PDS

None NO! NO!

3 Typical

Individual

UTP

100Ω ±15Ω T1, AT&T ISDN

10BASE-T

IBM Type 3

3-5 YES NO!

4 Enhanced

Individual

UTP

100Ω ±30Ω EIA, TIA

10BASE-T

NEMA

5-8 YES NO!

5 Individual

UTP

100Ω ±30Ω EIA, TIA

10BASE-T

8-10 YES YES

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 48 49

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