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Systems and Methods for Providing Service Migration Between First and Second Cellular Technologies

  • US 20130084876A1
  • Filed: 08/28/2012
  • Published: 04/04/2013
  • Est. Priority Date: 08/01/2003
  • Status: Active Grant
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 (IMT), 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 IMT 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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