If you suspect a line fault, what is the priority action to maintain communication?

• A. Continue using the line and report later.
• B. Switch to a known-good line or replace faulty components.
• C. Increase the line length to reduce resistance.
• D. Reboot the intercom system.

Answer: (B)

When a line fault is suspected, the priority is to keep communication reliable by bypassing the problem path. Switching to a known-good line or replacing the faulty component restores the circuit to a solid, intelligible connection instead of fighting through a potentially degraded or intermittent link. In a sound-powered setup, the emphasis is on the physical transmission path—if that path is suspected to be faulty, the quickest way to maintain contact is to use an alternate line or repair the faulty segment, not to continue on with a suspect line. Keeping on the suspected line risks dropped words, garbled language, or total loss when you need the link most. Rebooting the system isn’t applicable here because these devices are passive and rely on the line condition; increasing line length would only add resistance and further degrade the signal.