Telecom Definitions/Acronyms

WECO: Western Electric Company (Was a subsidiary of AT&T)
CLLI: Common Language Location Identification (11 character code)
CO: Central office
   Tandem Office: Provides services to end offices
   End Office: Provides services to customers
LERG: Local Exchange Routing Guide
LEC: Local Exchange Carrier
   ILEC: Incumbent Local Exchange Carrier (Ma Bell, etc)
   CLEC: Competetive Local Exchange Carrier (Everyone else)
ANI: Automatic Number Identification (Caller-ID)
DNIS: Dialed Number Identification Service (What number did they try to call)
LATA: Local Access and Transport Area