TELEPHONES; CELLULAR TELEPHONES; RADIO TELEPHONES; TELEPHONE RECEIVERS; TELEPHONE ANSWERING MACHINES; TELEPHONE APPARATUS, NAMELY, INTERCOMS; AUTOMATIC TELEPHONE DIALERS; COMPUTER SOFTWARE FOR CONTROLLING AND MONITORING TELEPHONES AND INSTRUCTION MANUALS THEREFOR; COMPUTER SOFTWARE FOR USE IN TELEPHONE CALL ACCOUNTING; COMPUTER SOFTWARE FOR USE IN MONITORING ACCESS TO A GLOBAL COMPUTER INFORMATION NETWORK AND BILLING CUSTOMERS FOR SUCH ACCESS