Cisco 3700 series User Manual

2-13
Cisco 3700 Series Routers Hardware Installation Guide
OL-2180-07
Chapter 2 Preparing to Install the Router
Preparing to Connect to a Network
For more information on BRI WAN interface cards, see the Cisco Interface Cards Installation Guide
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 Cisco Interface Cards
Installation Guide document on Cisco.com.
Table 2-4 ISDN BRI Cable Specifications
Specification High-Capacitance Cable Low-Capacitance Cable
Resistance (at 96 kHz) 160 ohms/km 160 ohms/km
Capacitance (at 1 kHz) 120 nF
1
/km
1. nF = nanoFarad
30 nF/km
Impedance (at 96 kHz) 75 ohms 150 ohms
Wire diameter 0.024 in. (0.6 mm) 0.024 in. (0.6 mm)
Distance limitation 32.8 ft (10 m) 32.8 ft (10 m)

Cisco 3700 series Specifications

General

Brand	Cisco
Model	3700 series
Category	Network Router
Language	English