computer and telecommunications hardware, namely, line cards that provide an interface to one or more analog or digital telephone lines, fax cards, speech recognition cards, network interface cards, central processors, voice discs, system discs, disc controllers, back-up streaming tapes, power supplies, control modules, modems and network interface modules, all for use in telephone voice messaging systems, multimedia messaging systems, and speech recognition systems; computer programs for voice messaging systems, namely, for providing call answering, universal mailbox, voice message storage and forwarding and retrieval, virtual telephony, fax messaging, text messaging, integrated and non-integrated short message service, network announcements, family mailbox, closed user group, call management, personal assistant, and prepaid wireless functions; computer programs for the management and analysis of telecommunications networks; computer programs for multimedia messaging systems, namely, for providing integrated voice and fax message functions; computer programs for speech recognition systems, namely, for providing voice activated dialing functions in telephony applications; computer programs for providing data network access to multimedia messaging systems; [ computer programs for radio frequency propagation analysis; ] computer programs for telephone calling card systems, namely, for providing prepaid call answering, prepaid direct dial, rapid response, prepaid voice activated dialing, and prepaid virtual telephony functions