Conferencing servers or bridges Conference servers and bridges can host multipoint audio and video conferencing for H.323-compatible products. Some servers and bridges may also host audio and video conferencing in conjunction with data conferencing, such as program sharing and file transfer. Service providers can offer an advanced network of audio, video, and data conferencing bridges, professional conference administrators, and special features, such as password security. Connecting multiple sites in the United States or worldwide, these services assist with equipment, reservation, scheduling, and customized reporting needs. Gateway devices Several companies have developed gateways that allow NetMeeting users to bridge to other types of networks, such as an H.320 ISDN video conference or a regular telephone on a public network.
Gatekeepers can also limit the number of calls that can be placed at any given time.
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