3-21
Cisco 3700 Series Routers Hardware Installation Guide
OL-2180-08
Chapter 3 Installing the Router
Connecting WAN, LAN, and Voice Cables
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.
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,
blue
T1 or E1 network RJ-48 T1/E1
Cisco serial 60-pin D-sub, blue CSU/DSU and serial network or
equipment
Cisco serial transition cable that matches
the signaling protocol (EIA/TIA-232,
EIA/TIA-449, V.35, X.21, or
EIA/TIA-530) and the serial port
operating mode (DTE or DCE).
See the Cisco Modular Access Router
Cable Specifications document for
information about selecting these cables.
Cisco Smart Serial Cisco Smart
compact connector,
blue
CSU/DSU and serial network or
equipment
For WIC-2T and WIC-2A/S only
DSL
1
1. DSL = digital subscriber line.
RJ-11C/CA11A,
lavender
Network demarcation device for
service provider’s DSL interface
RJ-11
T1/E1 digital voice RJ-48C/CA81A,
tan
Digital PBX RJ-48 T1/E1 cable
Analog voice FXS
2
2. FXS = foreign exchange station.
RJ-11, gray Telephone, fax RJ-11
Analog voice FXO
3
3. FXO = foreign exchange office.
RJ-11, pink Central office, analog PBX RJ-11
Analog voice E&M
4
4. E&M = ear and mouth.
RJ-11, brown Analog PBX RJ-11
BRI S/T WAN
(external NT1)
RJ-45/CB-1D,
orange
NT1 device or private integrated
network exchange (PINX)
RJ-45 straight-through
BRI U WAN
(built-in NT1)
RJ-49C/CA-A11,
red
ISDN network RJ-48 straight-through
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