ADC HDSL manual Hdsl, Typical Single Span Applications

WorldDSL™ HDSL

Economical, Reliable, and Manageable E1 and Serial Data Deployment

Features

HDSL

•Fiber optic quality (BER 10-10)

•LTUs can provide line powering for up to two doublers for very long reach loops

•LTUs can provide wetting current to reduce corrosion of connections

•Point-to-multipoint configurations where a single central office card can operate two 1 Mbps remote NTUs each via a single twisted pair to reduce system costs

•User software selectable dataport interface

•Single pair mode where the unit uses only one pair at a maximum rate of 1Mbps

•Timeslot priority mode where, if one of the two HDSL pairs fails, the FAS, signaling and first 15 voice channels are switched to the operating pair

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Single Span Reach

2 Span Single Doubler Reach

3 Span Two Doublers Reach

9

RANGE (KILOMETERS)

20

RANGE (KILOMETERS)

20

RANGE (KILOMETERS)

8

18

18

7

16

16

6

14

14

5

12

12

4

10

10

3

8

8

2

6

6

1

4

4

0

2

2

0.40 mm 0.51 mm 0.64 mm

0.91 mm

0.40 mm 0.51 mm 0.64 mm

0.91 mm

0.40 mm 0.51 mm 0.64 mm

0.91 mm

Wire Gauge (mm)

MAXIMUM

Wire Gauge (mm)

MAXIMUM

Wire Gauge (mm)

MAXIMUM

Figure 1

TYPICAL

Figure 2

TYPICAL

Figure 3

TYPICAL

MINIMUM

MINIMUM

MINIMUM

G.703

G.703

LTU or

120/75Ω

UTU*

120/75Ω

UTU

Serial

Serial

V.35/V.36/RS-530/X.21

V.35/V.36/RS-530/X.21

3.2 Km on 0.4 mm

5.3 Km on 0.64 mm

Typical Single Span Applications

E1 (G.703)

EDU

EDU

E1 (G.703)

120/75Ω

LTU

UTU**

120/75Ω

Serial

Serial

V.35/V.36/RS-530/X.21

V.35/V.36/RS-530/X.21

7.5Km on 0.4 mm

12.5Km on 0.64 mm

Typical 3-Span Extended Reach with doublers line powered and remote UTU locally powered

*Can be line powered from LTU or AC or DC local powered

**AC or DC local power required

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