Number portability using enhanced routing table
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United States of America Patent
Stats
-
Aug 1, 2000
Issued Date -
N/A
app pub date -
Nov 7, 1996
filing date -
Mar 8, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of providing number portability for the treatment of calls from a calling party to a specific number of a ported called party is disclosed. Once the dialed digits are received at a switching office serving the calling party, a determination is made of whether the call is a number that has been ported. If the number has been ported, the new routing information is obtained from an enhanced directory number table resident at the originating office. In the event that the originating office is unable to offer LRN service, information is obtained at an alternate office. Routing information is updated automatically and directly from a network Service Management System (SMS) to each telephone exchange.
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