PSD Telecommunications Technology and 9-1-1 Systems 3

Question 1

What is the purpose of a 'heartbeat' signal in PSAP equipment monitoring?

Accepted Answer

It is a periodic signal confirming a system or circuit is operational

Answer

A heartbeat signal is a routine status check sent between systems to confirm they remain active and functional.

Question 2

Which type of 9-1-1 call originates from a VoIP service and may present unique challenges for location accuracy?

Accepted Answer

Nomadic VoIP call

Answer

Nomadic VoIP calls are made from internet-based phone services that can be used from any location, making registered address data unreliable.

Question 3

In a 9-1-1 PSAP, what does CAD stand for?

Accepted Answer

Computer-Aided Dispatch

Answer

CAD (Computer-Aided Dispatch) is the software platform used to create, manage, and track incident records and dispatching.

Question 4

A dispatcher notices the 9-1-1 trunk group shows all trunks busy. What does this indicate?

Accepted Answer

All incoming 9-1-1 lines are in use and new callers may receive a busy signal

Answer

When all trunks are busy, new 9-1-1 callers cannot connect until a trunk becomes available, risking delayed emergency response.

Question 5

What is the function of a PSAP's logging recorder?

Accepted Answer

Records all incoming and outgoing telephone and radio communications

Answer

The logging recorder captures all voice communications for quality assurance, liability documentation, and incident review.

(PSD) Certified Public Safety Dispatcher Practice Test