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ENP Questions and Correct Answers
The feature that separates Basic
911 from enhanced 911 Ans: — Selective Routing
Local Access and Transport Area Ans: — LATA
End office, tandem or access tandem, facility and COs Ans: — 4
components of Traditional Telephone Topology
Used in the next generation network to transmit a caller's voice
using VOIP on a variety of different data transports Ans: — Packet
Switching
DTMF tones represent user to the network signaling, MF tones are
control signals within the network Ans: — Why do DTMF tones
differ from MF tones
the wireless network equivalent of a wireline network central
office Ans: — Mobile Switching Center
10 Digits Ans: — A phase II wireless call has how many telphone
number digits delivered to the PSAP through the E9-11 Wireline
Selective Router
Short Message Service (SMS) Ans: — The interim text for 911
technology use today is
Delivery of callback number and caller latitude/longitude to the
PSAP Ans: — Describes the FCC Phase II mandate
IP i3, Web Services, TTY Baudot Ans: — Three Delivery options for
SMS
Emergency Services Query Key (ESQK) Ans: — VOIP 911 call
delivery and ALI Retrieval are driven by which telephone number
Mobile Positioning Center (MPC) Ans: — The VOIP network element
that provides routing information and delivery of location for the
VOIP call
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Coalition of NENA and VOIP Service providers Ans: — The entity
that established the i1, i2, and i3 deployment pathway for VOIP
E911
Wireless Phase II Ans: — VOIP i2 call delivery and ALI query most
resembles
MSAG, ANI and ALI Ans: — Relational database scheme
Properly route a 911 call and provide the associated ELT Ans: —
The ESN assigned to an ESZ is used by the 911 selective router to
Record not found Ans: — Condition exists when a customer
service record has not been loaded int eh E911 ALI database
Latitude and Longitude Ans: — The geocoding process assigns
what information to tabular data stored with addresses
Spatial Data Ans: — GIS uses geography to store info and to relate
it to other information
Geographic Information System (GIS) Ans: — The core database for
call routing and delivery in the NENA i3 solution
Uniform Resource Indentifier (URI) Ans: — A predictable
formatting of text used to identify a resource on a network,
usually the internet
Location Information Server (LIS) Ans: — A functional entity that
provides locations of endpoints. Can provide location by reference
or location by value, and if the latter, in geo or civic forms
Protocal Interworking Function (PIF) Ans: — Coverting origination
legacy network calls to SIP signaling is accompished by the
Location to Service Translation (LoST) protocol Ans: — A protocol
that takes location information and a Service URN and returns a
URI. Used generally for location based call routing
Policy Routing Function (PRF) Ans: — A database function that
analyzes and applies ESInet or PSAP state elements to route calls,
based on policy information associated with the next hop
Border Firewall Ans: — The Border Control Function provides
© 2025 All rights reserved
ENP Questions and Correct Answers
The feature that separates Basic
911 from enhanced 911 Ans: — Selective Routing
Local Access and Transport Area Ans: — LATA
End office, tandem or access tandem, facility and COs Ans: — 4
components of Traditional Telephone Topology
Used in the next generation network to transmit a caller's voice
using VOIP on a variety of different data transports Ans: — Packet
Switching
DTMF tones represent user to the network signaling, MF tones are
control signals within the network Ans: — Why do DTMF tones
differ from MF tones
the wireless network equivalent of a wireline network central
office Ans: — Mobile Switching Center
10 Digits Ans: — A phase II wireless call has how many telphone
number digits delivered to the PSAP through the E9-11 Wireline
Selective Router
Short Message Service (SMS) Ans: — The interim text for 911
technology use today is
Delivery of callback number and caller latitude/longitude to the
PSAP Ans: — Describes the FCC Phase II mandate
IP i3, Web Services, TTY Baudot Ans: — Three Delivery options for
SMS
Emergency Services Query Key (ESQK) Ans: — VOIP 911 call
delivery and ALI Retrieval are driven by which telephone number
Mobile Positioning Center (MPC) Ans: — The VOIP network element
that provides routing information and delivery of location for the
VOIP call
© 2025 All rights reserved
, 2 | Page
Coalition of NENA and VOIP Service providers Ans: — The entity
that established the i1, i2, and i3 deployment pathway for VOIP
E911
Wireless Phase II Ans: — VOIP i2 call delivery and ALI query most
resembles
MSAG, ANI and ALI Ans: — Relational database scheme
Properly route a 911 call and provide the associated ELT Ans: —
The ESN assigned to an ESZ is used by the 911 selective router to
Record not found Ans: — Condition exists when a customer
service record has not been loaded int eh E911 ALI database
Latitude and Longitude Ans: — The geocoding process assigns
what information to tabular data stored with addresses
Spatial Data Ans: — GIS uses geography to store info and to relate
it to other information
Geographic Information System (GIS) Ans: — The core database for
call routing and delivery in the NENA i3 solution
Uniform Resource Indentifier (URI) Ans: — A predictable
formatting of text used to identify a resource on a network,
usually the internet
Location Information Server (LIS) Ans: — A functional entity that
provides locations of endpoints. Can provide location by reference
or location by value, and if the latter, in geo or civic forms
Protocal Interworking Function (PIF) Ans: — Coverting origination
legacy network calls to SIP signaling is accompished by the
Location to Service Translation (LoST) protocol Ans: — A protocol
that takes location information and a Service URN and returns a
URI. Used generally for location based call routing
Policy Routing Function (PRF) Ans: — A database function that
analyzes and applies ESInet or PSAP state elements to route calls,
based on policy information associated with the next hop
Border Firewall Ans: — The Border Control Function provides
© 2025 All rights reserved
