Patent ID: 6928074

Claim:
A method of transmitting data in which, to broadcast a block of information from a first terminal to a set of destination second terminals, each of which second terminals is connected to a switch of a network, comprises: transmitting the block of information from the first terminal to a broadcast module in a first switch which is connected directly to said first terminal, broadcasting said block of information from said broadcast module to switches adjacent said first switch and to destination second terminals which are connected directly to said first switch, and receiving said block of information in the destination second terminals, wherein, to transmit a block of information from the first terminal to the broadcast module, the method further comprises: sending a call request packet from the first terminal to the broadcast module of the first switch to request the setting up of an X.25 virtual circuit between said first terminal and the broadcast module of the first switch, placing a broadcast request in one field of said call request packet, and placing the block of information to be broadcast in the data packets of the X.25 virtual circuit set up between said first terminal and the broadcast module in response to said call request packet.