Cisco Systems 7100 Series quick start Connect the E3 Ports

Connect the Router to the Network (continued)

5
I	RCVR	XMTR
EN

Serial 1/0

Ferrite bead

To E3 network

equipment

RCLK FERF	RL
AIS OOF	LL

22073

9

Connect the E3 Ports

The E3 port supports full-duplex operation at E3 (34-Mbps) speeds. Use a 75-ohm coaxial cable to connect to an E3 serial network. Serial cables conform to EIA/TIA-612 and EIA/TIA-613 specifications. The E3 serial ports on the router are considered to be DTE devices.

Note: The E3 ports support several types of integrated DSUs. For a listing of DSU feature compatibilities, refer to Appendix C, “Cable Specifications,” in the Cisco 7100 Series VPN Router Installation and Configuration Guide.

1	Attach the appropriate 75-ohm coaxial
	cable directly to the receptacle on the
	router and tighten the strain-relief
	screws.
2	Attach the network end of the coaxial
	cable to the external synchronous serial
	equipment.

Note: The E3 coaxial cable comes with an attached ferrite bead.