Hosted PBX services; broadband services; communications by fiber optic networks; Internet access provider services; Internet service provider services; providing computer network access services; providing access to intranets and extranets; electronic transmission of data, images, and documents via the Internet, computer networks, fiber optic networks, extranets, and intranets; television broadcasting services; telephone communications; local and long distance telephone services; voicemail and visual voicemail services; video telephone and teleconferencing services; providing email services; providing instant messaging, web messaging and wireless digital messaging services; streaming of video and audio content via the internet and other electronic communications networks; video-on-demand transmission services; web site hosting services; email hosting services; leasing and rental of telecommunications equipment; providing a web-based system and online portal that allows customers to access, manage and administer their telecommunications accounts; software for integrating instant messaging, video communications, voice communications, and email communications, and for contact management and visual voicemail