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Module 2: Product Description

Call Scenarios

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Local Number Portability
Another Wireline Long Distance call scenario.

Scenario 5

Long Distance - IXC without LNP/LRN capability:

  1. Caller A calls long distance to Caller C from outside the ported area.
  2. LEC-3 routes the call to the caller's pre-subscribed carrier without any requirement to determine the LRN.
  3. The pre-subscribed IXC (IXC-2) is the N-1 carrier. Because IXC-2 does not have LNP/LRN capability, IXC-2 will default route traffic to LEC-1 (or LEC-2), who then becomes the carrier actually performing the LNP/LRN function to determine proper routing.
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