Installation guide

Making External Connections to Cisco 4000 Series Routers 4-95
Network Connection Considerations
Warning Invisible laser radiation can be emitted from the aperture ports of the
single-mode ATM products when no fiber-optic cable is connected. Avoid exposure and do
not stare into open apertures. This product meets the Class 1 Laser Emission Requirement
from CDRH FDDI. (To see translated versions of this warning, refer to the appendix
“Translated Safety Warnings.”)
For E3 and DS-3 connections, use the 75-ohm, RG-59, coaxial cable with bayonet-style,
twist-lock (BNC) connectors and ferrite beads. (See Figure 4-55.) The E3 and DS-3 PLIMs
both use the same cable. Ensure that the transmit and receive portions of the cable are
connected to the appropriate module connector.
Figure 4-55 DS3/E3 Cable—RG-59 Coaxial Cable with BNC Connectors
Connect the ATM network processor module interface cables as shown in Figure 4-56.
Ferrite beadsWhite insulator White insulator
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