National Register of Historic Places | location identifier | The Register | Federal Register | Lloyd's Register | Nana Visitor | filming location | register office | International Visitor Leadership Program | Gross register tonnage | Anatomical terms of location | Stationers' Register | Register of the Treasury | Kennedy Space Center Visitor Complex | Erving's Location, New Hampshire | Wentworth's Location, New Hampshire | Visitor | United States Capitol Visitor Center | Naval Vessel Register | National Register of Historic Places listings in Spokane County, Washington | National Register of Historic Places listings in Queens County, New York | National Register of Historic Places listings in Montezuma County, Colorado | National Register of Historic Places. | Colorado State Register of Historic Properties | Wentworth's Location | Virginia Landmarks Register | Victorian Heritage Register | The Orange County Register | The Des Moines Register | Standard Register Industrial |
A MSRN is assigned for every mobile terminated call, not only the calls where the terminating MS lives on a different MSC than the originating MS. Although this seems unnecessary since many vendors' VLR's are integrated with the MSC, the GSM specification indicates that the MSC and VLR (Visitor Location Register) do not need to reside on the same switch.
The Mobile Application Part is the application-layer protocol used to access the Home Location Register, Visitor Location Register, Mobile Switching Center, Equipment Identity Register, Authentication Centre, Short message service center and Serving GPRS Support Node (SGSN).