Cisco Systems 2800 manual Port or Connection Port Type, Color Cable, T1/E1 WAN

Table 3 summarizes some typical WAN, LAN, and voice connections for the Cisco 2800 series routers.

Table 3	WAN, LAN, and Voice Connections
Port or Connection		Port Type, Color	Connection	Cable
Ethernet		RJ-45, yellow	Ethernet hub or Ethernet switch	Category 5 or later Ethernet
T1/E1 WAN		RJ-48C/CA81A	T1 or E1 network	RJ-48 T1/E1
xCE1T1-PRI		RJ-48S, tan	External T1 CSU or other	RJ-48S to RJ-48S TE; RJ-48S to RJ-48S NT;
			T1 equipment	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	75-ohm coaxial cable
			T3/DS3 equipment
OC3 / STM-1 WAN		SC connector	OC3/STM-1 network or device	Single-mode or multimode optical fiber
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 EIA-530)
Cisco Smart Serial		Cisco Smart compact	CSU/DSU and serial network or
				and the serial port operating mode (DTE
		connector, blue	equipment
				or DCE).1
ADSL		RJ-11C/CA11A,	Network demarcation device for	RJ-11 straight-through
		lavender	service provider’s DSL interface
SHDSL		RJ-11C/CA11A,	Network demarcation device for	RJ-11 straight-through for 2-wire
		lavender, RJ-14	service provider’s DSL interface	RJ-14 straight-through for 4-wire
T1/E1 digital voice		RJ-48C/CA81A, tan	Digital PBX, ISDN network,	RJ-48 T1/E1
			CSU/DSU
Analog voice FXS		RJ-11, gray	Telephone, fax	RJ-11; RJ21 if using NM-HDA,
				straight-through
Analog voice FXO		RJ-11, pink	Central office, analog PBX
Analog voice E&M		RJ-45, brown	Analog PBX	RJ-45
BRI S/T WAN		RJ-45/CB-1D, orange	NT1 device or private integrated	RJ-45 straight-through
(external NT1)			network exchange (PINX)
BRI U WAN		RJ-49C/CA-A11, red	ISDN network	RJ-48 straight-through
(built-in NT1)
56/64-kbps		8-pin modular, blue	RJ-48S interface in subrate device	RJ-48 straight-through
DSU/CSU			or network
T1/FT1 DSU/CSU		8-pin modular, blue	RJ-48C interface	RJ-48 straight-through
Gigabit Ethernet SFP,		LC, color according	1000BASE-SX, -LX, -LH, -ZX,	Optical fiber as specified on applicable
optical		to optical wavelength	-CWDM	data sheet
Gigabit Ethernet SFP,		RJ-45	1000BASE-T	Category 5, 5e, 6 UTP
copper

1. See the Cisco Modular Access Router Cable Specifications document for information about selecting these cables.

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