Telecommunications Technology and 9-1-1 Systems Flashcards
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What does the term 'ANI' stand for in 9-1-1 telecommunications?
Answer: Automatic Number Identification
ANI stands for Automatic Number Identification, which delivers the caller's phone number to the PSAP.
Which generation of 9-1-1 allows callers to send text messages to a PSAP?
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.
A PSAP receives a 9-1-1 call but ALI data shows 'No Record Found.' What is the BEST immediate action?
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.
What is the primary function of a selective router in the 9-1-1 network?
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.
Which protocol is commonly used to transfer 9-1-1 call data between systems in a NG9-1-1 environment?
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.
What does 'MPDS' stand for as used in emergency dispatch?
Answer: Medical Priority Dispatch System
MPDS stands for Medical Priority Dispatch System, a structured protocol for handling medical emergency calls.
A wireless 9-1-1 call delivers Phase II location data. What does Phase II provide that Phase I does not?
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.