Page 164 of 332 Chapter 12 — Installing the circuit cards

NT1R20 Off-Premise Station (OPS) analog line card

The OPS analog line card provides eight OPS lines. You can install this card in slots 1 through 3 in the Main Chassis or slots 7 through 10 in the Chassis Expander.

Procedure 18

OPS analog line card installation

1Set the jumpers on the NT1R20 OPS card.

Each line interface unit on the card has two jumper blocks that are used to select the proper loop current, depending on loop length. See Table 33 on page 165 and Figure 46 on page 166.

For units connected to loops of 460 to 2300 ¾, both jumper blocks for that unit must have jumper straps installed. For loops that are 460 ¾ or less, jumper straps are not installed.

Figure 45

Set the jumpers

553-8346.EPS

2Insert the OPS card in its assigned slot.

3Cross connect off-premise telephones as described in “Connecting off-premise telephones” on page 235.

Refer to Figure 47 on page 167 for cross connection information for the OPS card.

—————————— End of Procedure ——————————

553-3021-209 Standard 3.00 April 2000

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Image 164
Nortel Networks Option 11C Mini manual NT1R20 Off-Premise Station OPS analog line card, Set the jumpers