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Cisco 4400 Series Hardware Installation Guide
OL-27644-01
Chapter 3 Installing and Connecting the Router
Connecting WAN, LAN, and Voice Interfaces
Ports and Cabling
Table 3-2 summarizes typical WAN, LAN, and voice connections for Cisco ISR 4451-Xs. The
connections summarized here are also described in detail in the document on Cisco.com: Cisco Modular
Access Router Cable Specifications
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.
Table 3-2 WAN, LAN, and Voice Connections
Port or Connection Port Type, Color
1
Connection: Cable
Ethernet RJ-45, yellow Ethernet hub or Ethernet switch Category 5 or higher Ethernet
T1/E1 WAN
xCE1T1-PRI
RJ-48C/CA81A
RJ-48S, tan
T1 or E1 network
External T1 CSU or other
T1 equipment
RJ-48 T1/E1
RJ-48S to RJ-48S TE
RJ-48S to RJ-48S NT
RJ-48S to RJ-48S T1
RJ-48S to bare
RJ-48S to BNC
RJ-48S to twinaxial cable
RJ-48S to DB-15
RJ-48S to DB-15 null
T3/DS3/E3 WAN BNC connector T3 network, CSU/DSU, or other
T3/DS3 equipment
75-ohm coaxial cable
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-530)
and the serial port operating mode
(DTE or DCE).
2
Cisco Smart serial Cisco Smart compact
connector, blue
CSU/DSU and serial network or
equipment
T1/E1 digital voice RJ-48C/CA81A, tan Digital PBX, ISDN network,
CSU/DSU
RJ-48 T1/E1
Gigabit Ethernet SFP,
optical
LC, color according
to optical wavelength
1000BASE-SX, -LX, -LH, -ZX,
-CWDM
Optical fiber as specified on applicable
data sheet
Gigabit Ethernet SFP,
copper
RJ-45 1000BASE-T Category 5, 5e, 6 UTP
1. Cable color codes are specific to Cisco cables.
2. See the Cisco Modular Access Router Cable Specifications document for information about choosing these cables.