X-Nico

unusual facts about switching center



Loopback

Performing transmission tests of access lines from the serving switching center, which usually does not require the assistance of personnel at the served terminal.


see also

Mobile Application Part

The Mobile Application Part is the application-layer protocol used to access the Home Location Register, Visitor Location Register, Mobile Switching Center, Equipment Identity Register, Authentication Centre, Short message service center and Serving GPRS Support Node (SGSN).

National Program Office

The facility also housed the central switching center for the Federal Reserve's Fedwire system until 1988 when all money was removed, switching was decentralized, and the site deactivated as a NPO facility.