Private Switch/Automatic Location Identification Service (PS/ALI)

Make Sure Emergency Services Know Where You Are
with PS/ALI

If your business or organization is located on a large campus or multiple locations, your system might not be able to identify specific location information to emergency agencies when a caller dials 9-1-1. And that can be the difference between a good or disastrous outcome. PS/ALI is an enhancement to 9-1-1 emergency response systems that allows you to enjoy the benefits of full-featured Enhanced 9-1-1 (E911) if you're a private branch exchange (PBX) and Centrex/Centron customer. This means that the E9-1-1 operator can direct emergency response personnel to your correct address, building, floor, room, or cubicle.


Experience Shortened Response Times in an Emergency

Enjoy Enhanced Property Protection and Safeguard of Investment Thanks to Accurate Location Identification

Benefit from Responsive 24/7 Support

Enjoy Lower Insurance Costs

Focus on Your Core Business While CenturyLink Handles Prevention and Mitigation of Emergency Events

Implement Solutions Effectively with Experienced, Dedicated CenturyLink® 911 Specialists


E911-Associated Service

Unique PBX Station Identification

Provides Accurate Location and Detailed Situation Information

How It Works

The PS/ALI service allows private switch owners to connect directly with the 9-1-1 network. This enables management of station locations with precision, accuracy, and specificity down to the floor, room or even cubicle level. When a PBX customer with direct inward dialing (DID) or a Centrex type system enters into an agreement to subscribe to PS/ALI, they work with the 9-1-1 public safety answering point (PSAP) to load specific station telephone number information and address information into the 9-1-1 database. Once the trunks to the 9-1-1 network are in place and the information is loaded into the 9-1-1 database, all 9-1-1 calls placed from the impacted stations are routed to the appropriate PSAP. The station information is then displayed to the PSAP, which automatically knows from which building, floor and room number the call is being made. Emergency vehicles are then dispatched appropriately.

CenturyLink CPE Public Safety Solutions

CenturyLink is a single source for networking, hardware, software, service and database maintenance for 911 solutions. CenturyLink has built strategic alliances with recognized leaders in public safety hardware and database maintenance services. Their skills, combined with CenturyLink's advanced network capabilities, provide the Public Safety Answering Points (PSAPs) with exceptional information accuracy and detail. 911 Solutions include products such as Basic 911, Enhanced 911, Emergency Transport Backup (ETB), Private Switch/Automatic Location Identification (PS/ALI), Cell Trace and Cell Trace Plus.

More Services and Solutions for You

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911 Services

CenturyLink is a single source for networking, hardware, software, service and database maintenance for 911 solutions.

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