An off-load cellular system controls cellular service between a main cellular system and the off-load cellular system and provides off-load cellular service to a mobile telephone. The off-load cellular system includes a receiver circuit, monitoring and receiving an origination message broadcast from...http://www.google.de/patents/US5487101?utm_source=gb-gplus-sharePatent US5487101 - Off-load cellular system for off-loading cellular service from a main cellular system to increase cellular service capacity
