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• Overview of Connecting the T640 Router to External Devices on page 209

• Tools and Parts Required to Connect the T640 Router to External Devices on page 210

• T640 RJ-48 Connector Pinouts for the SCG EXTERNAL CLOCK INPUTS Ports

Connecting PIC Cables to the T640 Router

The router supports PICs that use various kinds of network cable, including multimode

and single-mode fiber-optic cable. For information about the type of cable used by each

PIC, see the PIC guide for your router.

You connect PICs to the network by plugging in network cable. To connect cable to the

PICs (see Figure 97 on page 217, which shows a fiber-optic PIC):

1. Have ready a length of the type of cable used by the PIC. For cable specifications, see

Supported Network Interface Standards by Transceiver for ACX Series, M Series, MX

Series, and T Series Routers in the T640 Core Router Interface Module Reference.

2. If the PIC cable connector port is covered by a rubber safety plug, remove the plug.

WARNING: Do not look directly into a fiber-optic transceiver or into the

ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable

connected to a transceiver emit laser light that can damage your eyes.

CAUTION: Do not leave a fiber-optic transceiver uncovered except when

inserting or removing cable. The safety cap keeps the port clean and

prevents accidental exposure to laser light.

3. Insert the cable connector into the cable connector port on the PIC faceplate.

4. Arrange the cable in the cable management system to prevent it from dislodging or

developing stress points. Secure the cable so that it is not supporting its own weight

as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in

the cable management system. Placing fasteners on the loop helps to maintain its

shape.

CAUTION: Avoid bending fiber-optic cable beyond its minimum bend

radius.An arc smaller than a few inches in diameter can damagethe cable

and cause problems that are difficult to diagnose.

T640 Core Router Hardware Guide

Juniper T640 Hardware Guide

Other manuals for Juniper T640