telecommunication and data services, namely, delivery of messages by electronic transmission, electronic mail services, electronic store-and-foward messaging, electronic transmission of data and documents via computer terminals, electronic transmission of facsimile communications and data featuring encryption and decryption, electronic transmission of messages and data, electronic voice messaging, namely, the recording, storage and subsequent transmission of voice messages by telephone, facsimile transmission, PBX dialing services, providing on-line electronic bulletin boards for transmission of messages among computer users, providing frame relay connectivity services for data transfer, providing multiple user access to a global computer information network, providing telecommunications connections to a global computer network, rental of telecommunication equipment, ISDN services, telephone communication services, telephone voice messaging services