The E911 Service
implemented the use of 911 in the United States in 1968.
911 (E911) was first implemented in 1976.
E911 system requires the use of an Automatic Location Identification (ALI)
database to route 911 calls to the appropriate Public Safety Answering Point (PSAP)
and display the caller’s location.
Washington State E911 Program, currently managed by the Washington State
Emergency Management Division was established in 1991 to ensure E911 services
were available to all within the State.
State worked with various telephone companies and PSAP agencies throughout the
state to create a state-wide E911 system and a common ALI database.
The Name Changes
- AT&T was founded by Alexander Graham Bell and began operations in the United States in 1885.
- Pacific Northwest Bell was founded as a subsidiary to AT&T in 1961.
- The divestiture of AT&T in 1982 placed PNB into a regional holding company but the PNB name was retained.
- Pacific Northwest Bell and some other Bell operating companies were merged into USWest in 1991.
- USWest merged with and became absorbed by Qwest in 2000.
- CenturyLink acquired Qwest in 2011.
- CenturyLink (formerly Qwest, formerly USWest, formerly Pacific Northwest Bell (which was, then, a subsidiary of AT&T)) has now been purchased by Level3.
- CenturyLink’s ALI database and PS/ALI administration contractor, West Corporation, purchased Intrado in 2006.
- Intrado was a renaming of the company SCC in 2001.
- SCC was the corporation originally contracted by USWest to perform the ALI database and PS/ALI administration.
The ALI Database
Northwest Bell (PNB) originally created an ALI database in the late 1970’s and
managed it for its own service area.
State contracted USWest to manage a state-wide E911 ALI database shortly after
has been responsible for the state-wide ALI database from 1991 until recently.
between 1991 and 1998 USWest contracted with SCC to manage the regional ALI
database. This contract relationship has
been maintained through each company’s successor companies until today.
State contracted with ComTechTel to manage the state-wide E911/NG911
infrastructure and ALI database in 2016.
of the state-wide ALI database from CenturyLink to ComTechTel took place on
April 2, 2016.
The PS/ALI Service
- PNB managed all changes to the ALI database prior to their creation of the PS/ALI interface (AKA portal).
- PNB created the PS/ALI interface shortly prior to 1987 to allow enterprises to independently update their ALI database.
- The PS/ALI interface and the ALI database were initially managed by Pacific Northwest Bell.
- The PS/ALI interface has been managed, since its inception, by the same companies managing the ALI database.
- Migration of the state-wide ALI database from CenturyLink to ComTechTel took place on April 2, 2016; the PS/ALI interface was not retained in this migration.
- CenturyLink will no longer provide PS/ALI service beginning May 8, 2019.
- Current PS/ALI customers will need to submit ALI updates through a new third party ALI database update service provider after May 8, 2019.
LCSI and ALIPro Services
formed in 1984.
Inc. began uploading client ANI/ALI data to the then governing ALI database via
the PS/ALI service in 1987.
automation of client ANI/ALI data extraction, processing, and uploads via
PS/ALI to the ALI database began in 1999.
(Prior to this PBX configuration downloads were automated but manually
initiated; data processing was automated but manually initiated; PS/ALI data
uploads were manually initiated; and, Tone Commander (formerly Proctor) uploads
were manually initiated.)
Services was formally created as an LCSI service offering in 1999.
Wikipedia, 911, https://en.wikipedia.org/wiki/9-1-1#Enhanced_9-1-1
Union County Emergency Services, Dispatch Magazine, https://www.countyofunion.org/site/cpage.asp?cpage_id=180009766&sec_id=180003667.
LCSI and ALIPro Services documentation