Location Information Server

The patented RedSky Horizon® Location Information Server (LIS) is the key NG9-1-1 network element for receiving, storing and delivering the location data of any device used to dial 9-1-1 during an emergency.

The RedSky Horizon® Location Information Server is a universal location service designed to fill the void left by the transition from the legacy ILEC-based 9-1-1 system to the i3 NENA Specification environment.

How it Works

Every service provider needs an automated mechanism to provide moves, adds and deletions to a PSAP’s location database. The RedSky Horizon® LIS delivers NENA-standard data formats to PSAPs for fixed device service orders and obtains and delivers real-time location information for devices such as mobile phones, smartphones and enterprise Wi-Fi phones that are constantly moving.

Fixed Location Data

The RedSky Horizon® LIS supports NENA 2.1 and NENA 4 Service Order inputs from service providers to begin the validation process, report SOI errors, store valid location data, create XML-based location objects (PIDF-LO), and respond to queries as emergency calls enter the ESInet.

Dynamic Location Data 

The RedSky HorizonSM LIS also supports NENA’s E2 interface over IP to communicate with legacy elements and determine the location of network-connected devices. For example, the LIS determines the location of mobile phones by querying MPCs and GMLCs to get the pANI and the X, Y coordinate data of the caller.