They provide unified in-boxes for faxes, files, and voice mail. They support auto-attendants. Because of these features, small and midsized offices can now gain capabilities that were previously either impossible or economically unjustifiable. An example of a possible future benefit of IP telephony is the ability to browse Web pages from a phone. The VRU launches a Web browser, which finds and interprets a document written in VXML and then responds to the caller.
Users can interact with the Web either by voice or touch-tones.
VIP Telephony Product Alternatives Organizations looking to deploy IP telephony have a variety of possible product types to analyze. Some of the earliest implementations of IP telephony used this approach. These first-generation telephony servers generally run on Microsoft Windows NT and use expansion bus cards in the server to provide line expansion for telephones and trunks. Several characteristics have limited the usefulness of these systems. First, the scalability of these systems is limited by the number of expansion cards and wiring connectors that can be accommodated by a PC server.