Cisco uBR924 Installation Manual page 42

Cable access router

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Chapter 2

Preparing for Installation

Approvals and Regulations

Users should not attempt to make such connections themselves, but should contact the

Caution

appropriate electric inspection authority, or electrician, as appropriate.

The Ringer Equivalence Number (REN) assigned to each terminal device denotes the percentage of the

total load to be connected to a telephone loop which is used by the device, to prevent overloading. The

termination on a loop may consist of any combination of devices subject only to the requirement that

the total REN of all the devices does not exceed five.

Cisco uBR924 Router Hardware Installation Guide

2-10

OL-0338-01 (3/2000)

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Troubleshooting