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Systems and methods for providing service migration between first and second cellular technologies

  • US 8,599,866 B2
  • Filed: 08/28/2012
  • Issued: 12/03/2013
  • Est. Priority Date: 08/01/2003
  • Status: Expired due to Fees
First Claim
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1. A system, comprising:

  • a local number portability database; and

    a second mobile switching center of a second technology system in communication with the local number portability database, the second mobile switching center performing functions including receiving, via an inter-machine trunk, a call from a first mobile switching center of a first technology system upon the first mobile switching center receiving a local routing number of the second mobile switching center from the local number portability database, the inter-machine trunk including data translation for translating data back and forth between the first mobile switching center and the second mobile switching center, the call being intended for a mobile directory number of a destination phone that has been intra-service ported from the first technology system to the second technology system,wherein the first mobile switching center and the second mobile switching center reside within a mobile service carrier'"'"'s own system; and

    wherein prior to receiving the location routing number from the local number portability database, the first mobile switching center queries a home location register of the first technology system and receives a negative return result, the negative return result including at least one of a mismatch or an unassigned directory number.

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