Cisco Systems 3700 Series Connection Procedures and Precautions, 3-21, Port or Connection, Cable

Chapter 3 Installing the Router

Connecting WAN, LAN, and Voice Cables

Table 3-3	WAN, LAN, and Voice Connections
Port or Connection		Port type, color	Connection	Cable
Fast Ethernet		RJ-45, yellow,	Ethernet hub	Straight-through Ethernet
T1/E1 WAN		RJ-48C/CA81A,	T1 or E1 network	RJ-48 T1/E1
		blue
Cisco serial		60-pin D-sub, blue	CSU/DSU and serial network or	Cisco serial transition cable that matches
			equipment	the signaling protocol (EIA/TIA-232,
				EIA/TIA-449, V.35, X.21, or
Cisco Smart Serial		Cisco Smart	CSU/DSU and serial network or
				EIA/TIA-530) and the serial port
		compact connector,	equipment
				operating mode (DTE or DCE).
		blue	For WIC-2T and WIC-2A/S only
				See the Cisco Modular Access Router
				Cable Specifications document for
				information about selecting these cables.
DSL1		RJ-11C/CA11A,	Network demarcation device for	RJ-11
		lavender	service provider’s DSL interface
T1/E1 digital voice		RJ-48C/CA81A,	Digital PBX	RJ-48 T1/E1 cable
		tan
Analog voice FXS2		RJ-11, gray	Telephone, fax	RJ-11
Analog voice FXO3		RJ-11, pink	Central office, analog PBX	RJ-11
Analog voice E&M4		RJ-11, brown	Analog PBX	RJ-11
BRI S/T WAN		RJ-45/CB-1D,	NT1 device or private integrated	RJ-45 straight-through
(external NT1)		orange	network exchange (PINX)
BRI U WAN		RJ-49C/CA-A11,	ISDN network	RJ-48 straight-through
(built-in NT1)		red
CT1/PRI		T1	External T1 CSU	DB-15 T1 serial cable
CT1/PRI-CSU		T1	RJ-48C/CA81A interface	RJ-48 straight-through
CE1/PRI		E1	E1 network	DB-15 to BNC, DB-15 to DB-15, DB-15
				to twinax, or DB-15 to RJ-45
56/64-kbps CSU/DSU		8-pin modular, blue	RJ-48S interface	RJ-48 straight-through

1.DSL = digital subscriber line.

2.FXS = foreign exchange station.

3.FXO = foreign exchange office.

4.E&M = ear and mouth.

Connection Procedures and Precautions

Connect each WAN, LAN, and voice cable to the appropriate connector on the chassis or on a network module or interface card.

•Position the cables carefully, so that they do not put strain on the connectors.

•Organize cables in bundles so that cables do not intertwine.

•Inspect the cables to make sure that the routing and bend radiuses are satisfactory. Reposition cables, if necessary.

Cisco 3700 Series Routers Hardware Installation Guide

OL-2180-08 3-21