Patent ID: 7620034

Claim:
A Wireless number portability (WLNP) system for migrating a call flow for a mobile directory number (MDN) from a first phone to a second phone which has been intra-service ported, comprising: a first switch of a first technology; a second switch of a second technology; and a local number portability database (LNP) that stores local routing numbers (LRN) associated with MDN, wherein the WLNP system determines whether a call, from the first phone to the second phone, is received by a public switched telephone network (PSTN) or the first switch, and wherein: if the call is received by the PSTN with the LRN, the call is routed based on the LRN to the second switch; and if the call is received by the first switch without the LRN, the first switch queries the LNP for the LRN and the call is routed intra-carrier to the second switch via an inter-machine trunk (IMT), wherein the IMT includes data translation which allows for the translation of data back and forth between the first switch of the first technology and the second switch of the second technology.