56-K/Switched-56-Kbps Dsu/Csu Connections - Cisco 3700 Series Hardware Installation Manual

Chapter 2 Preparing to Install the Router
Table 2-4
Specification
Resistance (at 96 kHz)
Capacitance (at 1 kHz)
Impedance (at 96 kHz)
Wire diameter
Distance limitation
1. nF = nanoFarad
For more information on BRI WAN interface cards, see the
online document. This document is located on Cisco.com and the Documentation CD-ROM.

56-K/Switched-56-kbps DSU/CSU Connections

Switched-56-kbps connections are provided by the 56-kbps CSU/DSU WAN interface card.
For more information on switched-56-kbps WAN interface cards, see the
Installation Guide
OL-2180-07
ISDN BRI Cable Specifications
High-Capacitance Cable
160 ohms/km
1
120 nF /km
75 ohms
0.024 in. (0.6 mm)
32.8 ft (10 m)
document on Cisco.com.
Preparing to Connect to a Network
Low-Capacitance Cable
160 ohms/km
30 nF/km
150 ohms
0.024 in. (0.6 mm)
32.8 ft (10 m)
Cisco Interface Cards Installation Guide
Cisco 3700 Series Routers Hardware Installation Guide
Cisco Interface Cards
2-13