The problem with this is that most routers in their default state do not pass broadcast messages to machines outside the physical subnet.

However a broadcast message and response is fairly efficient.

The transmitters are mounted in the logging vehicles for broadcast messages.

"For us to be able to put a targeted message that specifically mentioned a neighborhood had far more stopping power than a simple broadcast message."

Paging takes place by sending the broadcast message to all of those cells.

Each broadcast message contains the ID and level of the fragment.

Instead the station broadcast messages inviting local musicians and groups to be recorded.

To create a broadcast message, the sender has to give the provider the information he wants to send, usually using a Web-based interface.

For broadcast messages, a single button transmits over all selected channels at the same time.

This wastes bandwidth and power on the mobile, by requiring it to listen for broadcast messages too much of the time.