Vertical Edge 120 Specifications download pdf (Page 75)

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DX-120 Installation and Maintenance Manual INSTALLING THE DX-120

Installing a DPM16 (continued on next page)

10) Make connections to the sixteen (16) digital ports as required.

CAUTION

The FCC requires that wiring of CO lines into a KSU be separated from

wiring of station apparatus into a KSU. Therefore you must use separate

cables for wiring stations and CO lines.

11) Replace the KSU cover and secure with cover screws.

12) Restore KSU power.

Adding a T1 or ISDN (T1/PRI) Card

• One T1 (T1 Module) or ISDN (T1/PRI Module) card can be added to KSU1.

• The module expands the DX-120 system CO Line interface capacity to a maximum of 24 CO Line ports in

system.

• The T1 or ISDN (T1/PRI) CARD is installed onto a designated connector located on the CPM2.

INSTALLING A T1 OR ISDN (T1/PRI) CARD

NOTE

In the description below, for better readability the term T1 is used to describe both

a T1 or ISDN (T1/PRI) Card.

1) Be sure that the entire system is turned off.

2) Remove the KSU cover (four screws at each corner).

3) Install a static discharge wrist strap on your bare wrist, and adjust it for a snug fit.

CAUTION

Be sure that the strap is touching bare skin and is not isolated by clothing.

4) Connect the wrist strap cord between the wrist strap and an AC or earth ground.

5) Connect a static discharge wrist strap to a suitable earth ground.

CAUTION

Circuit boards are susceptible to damage caused by electrostatic

discharge. You must keep this in mind as you handle the circuit boards.

For additional information, see Vertical publication IMI01-005, Handling of

Electrostatically Sensitive Components.

6) Remove the T1 Card module from the packaging and locate the four brass-color standoffs packaged

with the module.

7) Remove the installed CPM by removing the four brass standoffs used to secure the board, retaining

these standoffs for later use.

8) Position the T1 Card over the right-hand side of the 408M/E (and the COM4 module if it is installed).

NOTE

When installing a T1 Card module, Vertical recommends that you install it directly

below the CPM card.

Installing T1 or ISDN (T1/PRI) Card (continued on next page)

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Vertical Edge 120 Specifications Page 75