For this reason, this section on audioconferencing is relatively short. Using Audioconferencing Part of the Internet telephony package is the maintenance of directory lists, both locally and remotely. Many of the vendors of Internet telephony software maintain a server which keeps details such as email address and IP number for users of the service. They also group users according to their stated interests facilitating contact between users with common interests. Calls are made through the server or direct if the IP address is known.
Various facilities are available providing audio communication over the internet.
Some are marketed as a replacement for the telephone system, others are provided as group collaboration services. Internet Phone VocalTec's Internet Phone was one of the first on the scene with Internet phone capability and is still a leader in this field.