An overview of the local number portability Order indicates that long-term number portability will be facilitated by means of a national system of regional databases. Location routing number is the only method of number portability that currently complies with the criteria outlined by the FCC in the Order. The FCC concluded that the location routing number method is consistent with the statutory definition of number portability, and, in fact, state commissions have selected LRN as the preferred method of implementation. How LRN gets calls through Location routing number architecture utilizes a unique 10-digit number to identify each switch in a geographic area that has ported numbers. Carriers routing telephone calls to end-users who have transferred their telephone numbers from one local exchange carrier to another perform a database query to obtain the location routing number that corresponds to the dialed telephone number, and then routes the call to the appropriate switch for termination.
Location routing number identifies the switch that corresponds to that particular number.
Since location routing number completely changes the way calls will be routed, modifications will be required to the software in local and tandem switching systems, signaling transfer points, service control points, and billing systems. Electric Lightwave becomes early adopter of local number portability Two full years before LNP was mandated by the Telecommunications Act of 1996, Electric Lightwave, Inc. was already testing the concept of number portability in technology trials within the existing Electric Lightwave network. Electric Lightwave understood the importance of number portability to consumers, and the company sought a viable solution. The following month, Electric Lightwave began testing number portability between carriers. As a voting member in both the Western and West Coast region limited liability corporations, Electric Lightwave, was among the service providers that participated in the selection of the location routing number method for portability.