LIF (Location Interwork Function): Difference between revisions
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'''''LIF (Location Interwork Function)''''' is the functional component of a Legacy Network Gateway which is responsible for taking the appropriate information from the incoming signaling (i.e., calling number/ANI, ESRK, cell site/sector) and using it to acquire location information that can be used to route the emergency call and to provide location information to the PSAP. In a Legacy PSAP Gateway, this functional component takes the information from an ALI query and uses it to obtain location from a LIS. In an ingress LSRG, this functional component interacts with an ALI system as if it were a PSAP to acquire location that can be used to route the emergency call and to provide location information to the PSAP. In an egress LSRG, an ALI system will interact with this functional component as if it were an MPC/GMLC to obtain location information. |
'''''LIF (Location Interwork Function)''''' is the functional component of a Legacy Network Gateway which is responsible for taking the appropriate information from the incoming signaling (i.e., calling number/[[ANI (Automatic Number Identification)|ANI]], [[ESRK]], cell site/sector) and using it to acquire location information that can be used to route the emergency call and to provide location information to the [[PSAP (Public Safety Answering Point)|PSAP]]. In a Legacy PSAP Gateway, this functional component takes the information from an [[ALI (Automatic Location Identification)|ALI]] query and uses it to obtain location from a [[LIS (Location Information Server)|LIS]]. In an ingress [[LSRG (Legacy Selective Router Gateway)|LSRG]], this functional component interacts with an ALI system as if it were a PSAP to acquire location that can be used to route the emergency call and to provide location information to the PSAP. In an egress LSRG, an ALI system will interact with this functional component as if it were an [[MPC/GMLC (Mobile Positioning Center / Gateway Mobile Location Center)|MPC/GMLC]] to obtain location information. |
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Revision as of 17:23, 5 June 2024
LIF (Location Interwork Function) is the functional component of a Legacy Network Gateway which is responsible for taking the appropriate information from the incoming signaling (i.e., calling number/ANI, ESRK, cell site/sector) and using it to acquire location information that can be used to route the emergency call and to provide location information to the PSAP. In a Legacy PSAP Gateway, this functional component takes the information from an ALI query and uses it to obtain location from a LIS. In an ingress LSRG, this functional component interacts with an ALI system as if it were a PSAP to acquire location that can be used to route the emergency call and to provide location information to the PSAP. In an egress LSRG, an ALI system will interact with this functional component as if it were an MPC/GMLC to obtain location information.
Relevant NENA Documents
Note: To find and download the document, copy the document number (like NENA-STA-010) from below and search the NENA Standards and Documents page.
- NENA-STA-010, NENA i3 Standard for Next Generation 9-1-1
- NENA INF 003, NENA Demarcation Points in NG9-1-1 Information Document