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.
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.
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.