EXTENDING THE NETWORK INTERFACE TO A JACK FIELD FOR OUTSIDE LINES

If the local telephone company has provided an RJ2l-type network interface, you can connect the control unit to the network interface using adapters that allow you to plug D2R cords directly into the interface. You can also extend the network interface to a group of single-pair modular jacks mounted in an apparatus box in a jack field. Then you can connect the control unit to the outside lines by plugging the modular line cords into these jacks. See Figure 2-2on page 2-13.

You need the following items to extend the network interface to the jack field:

4-line adapters. Some examples of 4-line adapters are the following:

>The Z609A adapter splits four pairs from one

8-conductor modular jack to one pair in each of four 2-conductor modular jacks. All jacks are 8-position modular jacks.

>The Z610A adapter provides up to four single-pair jacks for the MERLIN II system control unit. This adapter consists of a no-type insulation displacement connector wired to four 6-position 2-conductor modular jacks.

Z122C apparatus boxes. Each box holds two 4-line adapters.

Single-ended 25-pair connectorized cable. This cable must be long enough to reach from the network interface to the jack field with some slack. Before you order this cable, check to see whether the 50-pin connector at the network interface is male or female and order cable with a 50-pin connector of the opposite gender.

Wiring the System 2-41

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AT&T 518-600-016 manual Wiring the System