Past Development
1903
Independent Company established "East" manual office at 20th & Columbia.
1906
Pacific Company's "East" office was first established using CB manual type equipment at 1520 17th Avenue.
1912
The Pacific Company purchased The Independent Companies "East" office and consolidation of central offices was made and duplication of plant eliminated.
1914
Capital office was established in a new building at 1127 Federal Avenue to help serve East district.
1927
Two units of panel equipment were installed at 1708 East Pike to replace the CB manual type for East and Prospect units.
1932
The Capital office were converted from manual to panel type dial equipment at 1708 East Pike.
1947
Fourth unit started using No. 1 crossbar.
1958
2L-5N dialing was established.
1961
DDD/CAMA established.
1962
Second unit of #1XB (EA 9) started.
1963
ANI installed.
Future Development
For the current view of future developments, please refer to the Seattle section of the "Planning Guide issued by the District Engineer – Planning.