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Clear Channel 6-Port T3 (DS3) Line Card Installation and Configuration
OL-3449-02
Chapter 2 Preparing for Installation
Software and Hardware Requirements
Software and Hardware Requirements
Table 2-1 lists the recommended minimum Cisco IOS software release required to use the 6-port 6T3
line card in the 7304 router platform.
75-Ohm In-Line Coaxial Attenuator (Optional)
A 75-ohm in-line coaxial attenuator may be required to tune the signal between the 6T3 line card and
the far-end equipment if the line card is experiencing line code violations (LCVs). LCVs occur when the
far-end equipment transmit signal saturates the front-end receiver of the 6T3 line card.
Cisco offers an attenuator kit (ATTEN-KIT-PA=) that contains five attenuators with fixed values
ranging from 3 dB to 20 dB. For more information on the attenuator kit, go to the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/core/7206/fru/12884att.htm
Safety Guidelines
This section provides safety guidelines that you should follow when working with any equipment that
connects to electrical power or telephone wiring.
Caution The 6T3 line card is not intended for direct connection to outside telecommunication lines. If connected
to an outside telecommunication line, suitable protection devices need to be provided.
Safety Warnings
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, might
harm you. A warning symbol precedes each warning statement.
Table 2-1 6T3 Line Card Software Requirements
Router Platform Recommended Minimum Cisco IOS Release
Cisco 7304 Router
1
1. The 6T3 line card requires a Network Services Engine 100 (NSE-100) to operate.
Cisco IOS Release 12.1(10)EX or a later release of Cisco IOS Release 12.1 EX