ADC 150-1122-03, Руководство пользователя

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150-454-111-06 Appendix B - Technical Reference
HRE-454 February 25, 2000 33
HRE-454 W
IRING
A single cable stub, shown in Figure 6 on page 15 and Figure 7 on page 16 , provides access from the HRE-454 to
the main cable. The stub is a 28-pair, 24-gauge, T-screened cable with two 14-pair binder groups.
Both 14-pair groups have the same color coding. The first twelve pairs are assigned the White/Blue through
White/Orange codes. Each group also has two pairs identified as Spare (SP)1 (White/Red) and SP2 (White/Black).
Group 1 is identified by a Blue group thread. Group 2 is identified by an Orange group thread.
The first eight pairs in each group connect to the four shelf slots as shown in Figure 15 . The HRE-454 is shown
as being wired in a typical mini-repeater fashion, using Sides 1 and 2 terminology. This adheres to conventional
T1 terminology which describes a unidirectional (simplex) service. HDSL is, in fact, a bidirectional (duplex)
Table 7. HRE-454 28-pair Cable Stub Wire Pair Assignment for Doubler and Remote Units
HRE 454 Slot No. Direction Side Group
(a)
(a) * Group #1 = Blue Thread, Group #2 = Orange Thread
Color Tip Color Ring Pair Number
1 In 1 1 White Blue 1
2 In 1 1 White Orange 2
3 In 1 1 White Green 3
4 In 1 1 White Brown 4
1 In 2 1 White Slate 5
2 In 2 1 Red Blue 6
3 In 2 1 Red Orange 7
4 In 2 1 Red Green 8
Order Wire 1 Red Brown 9
Spare
(b)
(b) These are the only available spares in the List 3 and List 4 models.
1 Red Slate 10
Spare
(b)
1 Black Blue 11
Spare
(b)
1 Black Orange 12
Spare 1 White Red SP1
Spare 1 White Black SP2
1 Out 1 2 White Blue 1
2 Out 1 2 White Orange 2
3 Out 1 2 White Green 3
4 Out 1 2 White Brown 4
1 Out 2 2 White Slate 5
2 Out 2 2 Red Blue 6
3 Out 2 2 Red Orange 7
4 Out 2 2 Red Green 8
Spare
(b)
2 Red Brown 9
Spare 2 Red Slate 10
Spare 2 Black Blue 11
Spare 2 Black Orange 12
Spare 2 White Red SP1
Spare 2 White Black SP2