Key telephones; private branch automatic telephone exchanges; multiple line telephone system attendant consoles; computer software programs for operating and managing telephone systems, voice mail, call accounting, and call management for use in voice and data communications; direct station selection units for telephones; voice mail systems comprising an integrated message system, namely, a system consisting of an external communication server, an internal communication server and computer that unify messaging in the nature of integrating voice, text, and e-mail messages in one location; telephones; telephone answering apparatus, namely, equipment for automatically answering telephones in the absence of human intervention and to receive, record, play back, and forward voice messages so received and/or to transmit messages over the telephone; radio paging systems comprising a handset, base station, repeater, portable mobile radio station, switching controller; voice over Internet protocol (VOIP) phones; Internet and H323 phones; LAN/WAN networks providing voice and video communication, namely, computer hardware and software for setting up and configuring local area networks; computer hardware and software for setting up and configuring wide area networks; computer network adapters; computer network hubs, switches and routers; LAN (local area network) access points for connecting network computer users; LAN (local area network) computer cards for connecting portable computer devices to computer networks; LAN (local area network) operating software and hardware; or WAN (wide area network) operating software and hardware