METRObility Optical Systems R231-1J, R231-61, R231-14 1Unpack the Line Cards, 2Set the Switches

FollowInstallationthe simple steps outlined in this section toGuideinstall and start using the Radiance access line cards.

NOTE: Electrostatic discharge precautions should be taken when handling any line card. Proper grounding is recommended (i.e., wear a wrist strap).

1Unpack the Line Cards

Your order has been provided with the safest possible packaging, but shipping damage does occasionally occur. Inspect your line card(s) carefully. If you discover any shipping damage, notify your carrier and follow their instructions for damage and claims. Save the original shipping carton if return or storage of the cards is necessary.

2Set the Switches

MDI-IIto MDI-XSwitch (twisted-pair ports only)

To eliminate the need for crossover cables, the access line card has an MDI-IIto MDI-Xswitch on its twisted-pair port. The switch is located on the center of the front panel. Use this switch to configure the port for either a straight-through or crossover connection.

•The parallel symbol (II) indicates a straight-through or parallel connection. The switch is up. (default)

•The cross symbol (X) indicates a crossover connection. The switch is down (depressed).

Use the following table as a guide.

A device that is wired straight through needs one crossover connection:

If the cable is	the MDI-II to MDI-X switch setting should be
straight through	X
crossover	II

A device that is wired crossover needs a parallel connection:

If the cable is	the MDI-II to MDI-X switch setting should be
straight through	II
crossover	X

6 Installation Guide