The invention is a system for providing virtual connections through an ATM interworking multiplexer on a call-by-call basis. A signaling processor receives signaling for a call and selects the virtual connection for the call. The signaling processor generates new signaling that identifies the selection...http://www.google.com.hk/patents/US6665294?utm_source=gb-gplus-share專利 US6665294 - Broadband telecommunications system