BRX-XLR User Guide
25
180-0145-001-R05
7.5
Step-by-step Installation Instructions
Step 1
: select the location where the BRX-XLR device will be inserted as per the guidelines
in this document.
Step 2
: connect the grounding lug of the unit to a proper ground (usually available near a
splice point).
Please refer to section 8.1 for more details about bonding and
grounding considerations.
Step 3:
when using an 8, 24 or 48 pair enclosure, insert the BRX-XLR-M modules in the slot
matching the pair to amplify. The BRX module slots of the BRX-XLR-8 enclosure are
numbered from bottom to the top as per the following table:
Slot Number
Pair Assignment
Pair Color (odd / even)
4 (topmost slot)
7 (left side), 8 (right side)
Red- Orange / Red-Green
3
5 (left side), 6 (right side)
White-Slate / Red-Blue
2
3 (left side), 4 (right side)
White-Green / White-Brown
1 (bottom slot)
1 (left side), 2 (right side)
White-Blue / White-Orange
Table 7: BRX-XLR-8 slot & pair assignment
The BRX module slots of the BRX-24S chassis are numbered from the top to the bottom
as per the following table:
Slot Number
Pair Assignment
Pair Color
1 (topmost slot) 1 (left side), 2 (right side)
White-Blue / White-Orange
2
3 (left side), 4 (right side)
White-Green / White-Brown
3
5 (left side), 6 (right side)
White-Slate / Red-Blue
4
7 (left side), 8 (right side)
Red-Orange / Red-Green
5
9 (left side), 10 (right side)
Red-Brown / Red-Slate
6
11 (left side), 12 (right side)
Black-Blue / Black Orange
7
13 (left side), 14 (right side)
Black-Green / Black-Brown
8
15 (left side), 16 (right side)
Black-Slate / Yellow-Blue
9
17 (left side), 18 (right side)
Yellow-Orange / Yellow-Green
10
19 (left side), 20 (right side)
Yellow-Brown / Yellow-Slate
11
21 (left side), 22 (right side)
Violet-Blue / Violet-Orange
12 (bottom slot) 23 (left side), 24 (right side)
Violet-Green / Violet-Brown
Table 8: BRX-24S slot & pair assignment
Step 4:
connect one of the CO pairs to a pair from the DSLAM
Step 5
: connect the corresponding CPE pair to the pair toward the subscriber home
In steps 4 and 5, when connecting the pairs of the BRX-XLR device, care should be taken to
match the pair numbers as per the color codes in the tables of step 3 above.
Note
: After step 5, the DSLAM and the CPE will retrain the circuit and bring up the ADSL2+ or
ADLS2 link with the higher bandwidth.