Balun block and Z-IDC installation

Overview

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.

Balun block connections to the Z-IDC punchdown block

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

 

Notes:

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.

Installation procedures

Task StepsPerform 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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