MEMORY DIALER SYSTEM FOR USE WITH PLURAL TELEPHONES AND HAVING PROVISION FOR STACKING MORE THAN ONE USER

The invention is directed to a memory dialer system in which a central memory system is used for all extensions of a particular telephone network. The system can be used with up to four telephone lines and is provided with stacking means so that if two calls are made simultaneously, a single call is serviced and busy signals sent to the others until the telephone line is free.