Balun block and Z-IDC installation | |||
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If the incoming facility is 75-ohm unbalanced coaxial cable, the customer is responsible to convert it to 120-ohm balanced twisted pairs. The conversion of the coaxial cable to twisted pairs may be accomplished with Alcatel-Lucent balun or equivalent. Refer to the table below for punchdown, and cable color code information.
The following table provides the punchdown and color code information for the twisted pair cable between the balun block and the Z-IDC.
T1/E1 line (See Note 1) |
Pair Number |
Function Tx/Rx, Tip/Ring |
Wire color in recommended T1/E1 cable |
Punchdown position (Z-IDC block) See Note 2 |
RJ-45 Pin (for verification) |
1 |
1 |
Tx T |
White/Blue |
1-1 Upper |
1 |
Tx R |
Blue/White |
1-1 Lower |
2 | ||
2 |
Rx T |
White/Orange |
1-2 Upper |
4 | |
Rx R |
Orange/White |
1-2 Lower |
5 |
1 | 1-1 Lower = first T1/E1 Z-IDC, position #1 lower. 1-2 Upper = First T1/E1 Z-IDC, position #2 upper. |
2 | One cable is required for each T1/E1 line. |
Perform the following steps to install the Balun block, and the Z-IDC punchdown block.
1 |
Install the balun block with the mounting plate using the customer supplied hardware. |
2 |
Install the Z-IDC bracket within 10 feet of the balun block using the customer supplied hardware. |
3 |
Ground the Z-IDC bracket using the lug and hardware supplied with the bracket, and the 16 mm2 (6-AWG) ground wire provided as part of site preparation. |
4 |
Install the Z-IDC connector block on the bracket. |
5 |
If balun block is present, plug the RJ-45 connector of the supplied 10 foot cables into the balun block RJ-48C jacks. If cross connect is present, it must be connected to the Z-IDC with the customer provided cable. |
6 |
Route and cut the cables to the proper length, leaving sufficient slack. |
7 |
Punchdown the cables at the Z-IDC using the Z-IDC punchdown tool. Refer to Balun block connections to the Z-IDC punchdown block for punchdown and wire color code. End of steps |
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