A system and method for connecting a call processes call signaling to determine if a call is a ported call or a non-ported call. A signaling processor determines if a ported number parameter (PNP), such as a forward call indicator (FCI) bit M and/or a ported number generic address parameter (GAP), is...http://www.google.com.tw/patents/US6535599?utm_source=gb-gplus-share專利 US6535599 - System and method for processing ported calls
