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Public-images-osm logo.svg building = central_office
East 13th Telephone Building, Manhattan.jpg
A telephone exchange. Edit or translate this description.
Rendering in OSM Carto
Area building=yes.png
Group: Buildings
Used on these elements
may be used on nodesshould not be used on waysmay be used on areasshould not be used on relations
Useful combination
See also
Status: deprecatedPage for proposal

In the public telecommunication networks a telephone exchange is located in a central office (CO), typically a building used to house the inside plant equipment of potentially several telephone exchanges, each serving a certain geographical exchange area. wikipedia:Telephone_exchange

This key shouldn't be used any more. It is now recommended to use telecom=exchange to map such places.

Name Conventions

It is suggested that the name of building include the key:clli code. Such as: "Central Office WDSTILWS" when the building is commonly called a (local) central office or "10 South Canal (Central Office CHCGILCL)" when the building has another common name.