PSD Telecommunications Technology and 9-1-1 Systems 2 — Questions and Answers
Question 1: What does the term 'ANI' stand for in 9-1-1 telecommunications?
- Automatic Number Identification (Correct answer)
- Advanced Network Interface
- Analog Node Integration
- Automated Notification Index
Correct answer: Automatic Number Identification
ANI stands for Automatic Number Identification, which delivers the caller's phone number to the PSAP.
Question 2: Which generation of 9-1-1 allows callers to send text messages to a PSAP?
- Basic 9-1-1
- Enhanced 9-1-1
- Next Generation 9-1-1 (Correct answer)
- Advanced 9-1-1
Correct answer: Next Generation 9-1-1
Next Generation 9-1-1 (NG9-1-1) supports text-to-911, video, and data beyond traditional voice calls.
Question 3: A PSAP receives a 9-1-1 call but ALI data shows 'No Record Found.' What is the BEST immediate action?
- Disconnect and wait for a callback
- Ask the caller to verify their location verbally (Correct answer)
- Transfer to the telephone company immediately
- Place the call on hold until ALI updates
Correct answer: Ask the caller to verify their location verbally
When ALI fails, the dispatcher must verbally confirm location with the caller to ensure accurate emergency response.
Question 4: What is the primary function of a selective router in the 9-1-1 network?
- Encrypts 9-1-1 calls for security
- Routes calls to the correct PSAP based on the caller's location (Correct answer)
- Converts analog signals to digital format
- Manages call recording storage
Correct answer: Routes calls to the correct PSAP based on the caller's location
The selective router directs 9-1-1 calls to the appropriate PSAP based on the caller's ANI/ALI data.
Question 5: Which protocol is commonly used to transfer 9-1-1 call data between systems in a NG9-1-1 environment?
- ISDN PRI
- SIP (Session Initiation Protocol) (Correct answer)
- POTS
- DTMF
Correct answer: SIP (Session Initiation Protocol)
SIP is an IP-based signaling protocol used in NG9-1-1 to handle voice, video, and data session establishment.
Question 6: What does 'MPDS' stand for as used in emergency dispatch?
- Multi-Point Dispatch System
- Medical Priority Dispatch System (Correct answer)
- Mobile Phone Data Service
- Managed Priority Dispatch Software
Correct answer: Medical Priority Dispatch System
MPDS stands for Medical Priority Dispatch System, a structured protocol for handling medical emergency calls.
Question 7: A wireless 9-1-1 call delivers Phase II location data. What does Phase II provide that Phase I does not?
- The caller's name and address from a database
- The cell tower location only
- Latitude and longitude coordinates of the handset (Correct answer)
- The caller's billing address
Correct answer: Latitude and longitude coordinates of the handset
Wireless Phase II uses GPS or network triangulation to provide latitude/longitude coordinates of the device itself.
PSD Telecommunications Technology and 9-1-1 Systems 2
What does the term 'ANI' stand for in 9-1-1 telecommunications?