Providing voice over Internet protocol (VOIP) peer-to-peer communications, providing voice over Internet protocol (VOIP) with PSTN termination by an existing PBX, third party hosted PBX or centrex service or other termination service, text messaging (mobile), Instant Messaging, presence, video, contact storage and synchronization, and other communications services; telecommunications services, transmission of audio, video, images, text and other data by means of a communications network; communication of information and data by telecommunications; telephone, mobile telephone message collection and transmission; internet telephony services; messaging services, namely, sending, receiving and forwarding messages in the form of text, audio, images or video; instant messaging services; electronic transmission of messages and data; electronic digital transmission of voice, data, images, signals and messages; simple message service (SMS) and multimedia message service (MMS) via telecommunications and computer networks; application service provider (ASP) services featuring software in the fields of VOIP communication services, web-based conferencing, audio conferencing, electronic messaging, video conferencing, and voice and call processing