16
WAN, LAN, and Voice Connections
The connections and cables listed here are described in detail in the following documents:
•
Cisco 3700 Series Hardware Installation Guide
•
Cisco Network Modules Hardware Installation Guide
•
Cisco Interface Cards Installation Guide
•
Cisco Modular Access Router Cable Specifications
For information about accessing these documents, see the “Where to Go Next” section on page 24.
Table 3 summarizes some typical WAN, LAN, and voice connections for Cisco 3745 routers.
Table 3
WAN, LAN, and Voice Connections
Port or Connection
Port Type, Color
Connected to:
Cable
FastEthernet
RJ-45, yellow,
Ethernet hub or switch
Straight-through Ethernet
T1/E1 WAN
RJ-48C/CA81A, blue
T1 or E1 network
RJ-48 T1
Cisco serial
60-pin D-sub
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).
1
1. 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
RJ-11C/CA11A,
lavender
Network demarcation device for
service provider’s DSL interface
RJ-11
T1 digital voice
RJ-48C/CA81A, tan
Digital PBX
RJ-48 T1 cable
Analog voice FXS
RJ-11, gray
Telephone, fax
RJ-11
Analog voice FXO
RJ-11, pink
Central office, analog PBX
RJ-11
Analog voice E&M
RJ-11, brown
Analog PBX
RJ-11
BRI S/T WAN
(external NT1)
RJ-48C/CA81A, red
NT1 device or private integrated
network exchange (PINX)
RJ-48
BRI U WAN
(built-in NT1)
RJ-49C/CA-A11,
orange
ISDN network
RJ-49
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 DSU/CSU 8-pin modular, blue
RJ-48S interface
RJ-48 straight-through
