2-12
Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-18712-02
Chapter 2 Preparing for Router Installation
Required Tools and Equipment for Installation and Maintenance
CSU/DSU Connections
CSU/DSU WAN interface cards (WICs) are available to provide switched-56-kbps connections or full
or fractionalized T1 connections.
For more information on CSU/DSU WICs, see the online documents at Cisco.com.
Required Tools and Equipment for Installation and Maintenance
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning
This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260.
Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The
telecommunications lines must be disconnected 1) before unplugging the main power connector or 2)
while the housing is open, or both.
Statement 1043
You need the following tools and equipment to install and upgrade the router and its components:
•
ESD-preventive cord and wrist strap
•
Number 2 Phillips screwdriver
•
Phillips screwdrivers: small, 3/16-in. (4 to 5 mm) and medium, 1/4-in. (6 to 7 mm)
–
To install or remove modules
–
To remove the cover, if you are upgrading memory or other components
•
Screws that fit your rack
•
Wire crimper
•
Wire for connecting the chassis to an earth ground:
–
AWG 6 (13 mm
2
) wire for NEBS-compliant chassis grounding
–
AWG 14 (2 mm
2
) or larger wire for NEC-compliant chassis grounding
–
AWG 18 (1 mm
2
) or larger wire for EN/IEC 60950-compliant chassis grounding
•
For NEC-compliant grounding, an appropriate user-supplied ring terminal, with an inner diameter
of 1/4 in. (5 to 7 mm)
Ta b l e 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 = nano Farad
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)
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