This technical requirements document defines the switch requirements for Number Portability (NP) between wireline networks, using the Location Routing Number (LRN) Method. The terms Number Portability (NP) and Local Number Portability (LNP) are used interchangeably within this document.
ATIS T1.TRQ.02-2001
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Number Portability Switching Systems (Revision of T1.TRQ.2-1999)
The Alliance for Telecommunications Industry Solutions , 03/01/2001











