Thousands Block Number Pooling Using Number Portability
|Publication Date:||1 October 2004|
This technical requirements document defines the Switching System, Number Portability Database (NPDB), and Number Portability Global Title Translation (NP GTT) requirements for Thousands Block Number Pooling1 in Number Portability (NP) capable wireline networks. This uses the Location Routing Number (LRN) method for number portability. Thousands Block Number Pooling shares an NPA-NXX among carriers allocating numbers in blocks of onethousand numbers with the same NPA-NXX-X. The pooling of numbers in blocks smaller than one-thousand (e.g., Individual Telephone Number Pooling) and the pooling of numbers outside a rate center are not addressed...
1 To avoid confusion with the acronym for number portability (NP), this document does not use an acronym for number pooling.