9
Computer hardware and computer software for use in electronic transmission of voice, messages and data; caller and voice messaging; caller availability; IP telephony; facsimile transmission; paging; callback services; and call control and signaling; computer software for use in PSTN ( public switched telephone network) communications via a global computer network
38
Telecommunication services, namely, electronic transmission of voice, messages, and data; caller and voice messaging services; caller availability services; IP telephony services; facsimile services; paging services; callback services; and call control and signaling services, communications services by which public switched telephone network communications are managed via a global computer information network
42
Support services for computer software, computer services and telecommunication services in the field of voice, messages, and data; caller and voice messaging; caller availability; IP telephony; facsimile transmission; paging; callback services; and call control and signaling