A technique is disclosed for use in conjunction with an ISDN communications system for permitting a host computer, that is executing a host session with a user and is connected through the system, to dynamically change an ISDN access path, that connects the user to the host computer and carries the host...http://www.google.ca/patents/US4996685?utm_source=gb-gplus-sharePatent US4996685 - Technique for dynamically changing an ISDN connection during a host session
