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Cisco 1900 Series Hardware Installation
OL-19084-02
Chapter 4 Installing and Connecting the Router
Connecting WAN and LAN Cables
Ports and Cabling
Table 4-1 summarizes some typical WAN and LAN connections for Cisco 1900 series routers. These
connections are also described in detail in Cisco Modular Access Router Cable Specifications.
Tab l e 4-1 WAN and LAN Connections
Port or Connection Port Type, Color1
1. The color codes are specific to cables shipped by Cisco
Connected to: Cable
Gigabit Ethernet
(GE)
RJ-45, yellow Ethernet switch or hub. Crossover to connect to a
router
Straight-through to connect
to a switch
T1/E1 WAN RJ-48C T1 or E1 network or
CSU/DSU.
RJ-48 T1/E1
straight-through (Crossover
to connect to a PBX or any
other equipment)
Cisco serial (1T) 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).
Refer to Cisco Modular
Access Router Cable
Specifications for
information about selecting
these cables.
Cisco Smart serial
(2T)
Cisco Smart
compact connector,
blue
CSU/DSU and serial
network or equipment.
For WIC-2T and WIC-2A/S
only.
DSL RJ-11C/RJ-14C Network demarcation
device for service provider’s
DSL interface.
RJ-11 straight-through for
2-wire
RJ-14 straight-through for
4-wire
BRI S/T WAN
(external NT12)
2. NT1 = Network Termination 1
RJ-45, orange NT1 device or PINX3
3. PINX = Private integrated network exchange
RJ-45 straight-through
BRI U WAN
(built-in NT1)
RJ-49C/CA-A11,
orange
ISDN network RJ-49 straight-through
Analog modem RJ-11 PSTN RJ-11 straight-through
56/64-kbps
CSU/DSU
8-pin modular RJ-48S interface. RJ-48 straight-through.