Is it okay to use a cable tray for the horizontal path of telephone lines to their specific outlets? Is there a need for a pull box?

EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN:9781337516549
Author:Simmons
Publisher:Simmons
Chapter25: Television, Telephone, And Low-voltage Signal Systems
Section25.3: Signal System
Problem 18R: a. How many feet of 2-conductor bell wire cable are required? ______ b. How many feet of 3-conductor...
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Is it okay to use a cable tray for the horizontal path of telephone lines to their specific outlets? Is there a need for a pull box?

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