Csu/Dsu Connections; Required Tools And Equipment For Installation And Maintenance - Cisco WS-C2950-24 Installation Manual

Required Tools and Equipment for Installation and Maintenance

Table 2-4
Specification
Resistance (at 96 kHz)
Capacitance (at 1 kHz)
Impedance (at 96 kHz)
Wire diameter
Distance limitation
1. nF = nano Farad

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
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning
Statement 1030
This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260.
Warning
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:
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Cisco 2900 Series and 3900 Series Hardware Installation Guide
2-12
ISDN BRI Cable Specifications
High-Capacitance Cable
160 ohms/km
120 nF
75 ohms
0.024 in. (0.6 mm)
32.8 ft (10 m)
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:
2
AWG 6 (13 mm ) wire for NEBS-compliant chassis grounding
–
2
AWG 14 (2 mm ) or larger wire for NEC-compliant chassis grounding
–
2
AWG 18 (1 mm ) 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)
Low-Capacitance Cable
160 ohms/km
1
/km 30 nF/km
150 ohms
0.024 in. (0.6 mm)
32.8 ft (10 m)
Chapter 2 Preparing for Router Installation
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