150-454-111-06
Appendix B - Technical Reference
HRE-454
February 25, 2000
33
HRE-454 W
IRING
, 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
. 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
1
Black
Blue
11
Spare
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
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
