Wiring The E1 Cables To The Ddf; Figure 5-13: Attaching The Connection Blocks - Eci Telecom NPT-1020 Installation And Maintenance Manual

NPT-1020 Installation and Maintenance Manual
To attach the connection blocks:
1. Place the block in front of the corresponding DDF bushing pair as shown in the following figure.
2. Push the block on the bushings to snap it on.
3. Repeat Steps 1 and 2 to attach the other four connection blocks.

5.6.2 Wiring the E1 Cables to the DDF

The DDF terminal blocks connect the wires from the equipment and the wires from the customer
interfaces. The E1 cables from the equipment are routed to the rear part of the DDF and passed to the
connection blocks. The cables from the customer E1 interfaces are routed to the sides of the DDF and
connect to the corresponding blocks.
The following sections describe the connection of the equipment and the customer lines to the DDF.
5.6.2.1 Connecting Equipment Cables
The cables from the equipment are routed to the rear of the DDF tray. The tray has a cable support comb to
facilitate cable routing.
To connect an equipment E1 cable:
1. Route the E1 cable from the equipment to the rear part of the DDF.
2. Remove the outer cable jacket, as required, to expose the wire pairs.
3. Use cable ties as needed to attach the cable edge to the cable holder comb.
4. Route the wire pairs through the plastic frame (at the rear of the block).
5. Connect each pair to the corresponding block contacts according to the wiring diagram.
ECI Telecom Ltd. Proprietary

Figure 5-13: Attaching the connection blocks

NPT-1020 Wall-Mounted Installations
5-13