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 Wednesday, September 13, 2006
A new standard from ITU-T will give the ability to multicast in VoIP. The feature could be especially useful in order to provide early warnings in disaster scenarios say experts.

ITU-T Recommendation H.460.21 provides a message broadcast mechanism in H.323 systems, which are widely deployed worldwide for Voice over IP (VoIP) communications. This mechanism is akin to that of Cell Broadcast for mobile systems and can be used by network operators and service providers to deliver early warning messages to a large number of users without causing overload of the underlying network infrastructure.

Since the method utilizes standard Internet multicast procedures, the feature may be used on a wide scale to reach any number of H.323 endpoints throughout the world. Thus, the feature could be used to equal effect as an intercom like function in an enterprise or a notification system to geographically dispersed terminals.