Telecommunications apparatus, namely, mobile and fixed computer hardware; computer software for use in sending and receiving instant text and speech messages from computers interfacing to a network and from fixed, mobile and cordless telephones to a range of fixed and mobile devices; paging and messaging computer software platforms for the delivery of paging and messaging to wireless devices; paging and messaging apparatus and equipment, namely, paging apparatus, paging equipment, electronic text-messaging devices for use in conjunction with personal digital systems; [ portable communication instant messaging devices; ] electronic mail and messaging software; networking equipment and networking infrastructure in the nature of computer networking hardware connecting to telecommunications base station equipment; centralized alarm management systems composed primarily of computer networking hardware, and telecommunications base station equipment interfacing to sensors, microprocessors, computer hardware, computer network hardware and direct line contacts; web based interfacing, namely, computer software that provides web-based access to applications and services through a web operating system or portal interface running on computer network interface devices; access control systems comprised primarily of computer software, sensors, microprocessors, computer hardware, computer network hardware and direct line contacts