Extension and Trunk Line Cable Structure

The twisted pair cable used for Extension and trunk lines in the MX-ONE is delivered with 32 pairs. The cable is structured either with 8 pairs in 4 bundles, 2 blue and 2 orange bundles, or, with 16 pairs in 2 bundles, 1 blue and 1 orange. Each bundle is kept together with a bundle thread.

Figure 1. Cable Structure

The cables connected to the extension and trunk boards are connected on the other end to external telephone lines through the Main Distribution Frames (MDF). The following tables specify the color coding of the 32 pair cable used for and ELU26, ELU31, ELU33, from ELU34/1 to ELU34/6, and other boards, and the connection cable used for TLU76, TLU77, TLU79, TLU80, from TLU83/1 to TLU83/3.

Use the tables below to connect extension and trunk cables to the MDF. Note, that the screen also shall be grounded on the MDF-side, due to the demand of Multi point earthing. See document 19/1531-ASP11301.

Figure 2. 32 pair cable for ELU26, ELU31, ELU33, from ELU34/1 to ELU34/6, TLU76, TLU77, TLU79, TLU80, and from TLU83/1 to TLU83/3 (TSR 910 1054/16M or 32M)

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