Abstract: A communication system includes a station-side terminal apparatus and multiple subscriber-side terminal apparatuses connected to the station-side terminal apparatus. The station-side terminal apparatus is configured to, in response to receipt of a packet from a subscriber-side terminal apparatus, a packet indicating whether data distribution is required, identify the subscriber-side terminal apparatus that has transmitted the packet, and transmit a packet indicating an address for which whether the transfer of distribution data is required is designated to the subscriber-side terminal apparatus based on whether data distribution is required.

Abstract: A communication system includes a station-side terminal apparatus and multiple subscriber-side terminal apparatuses connected to the station-side terminal apparatus. The station-side terminal apparatus is configured to, in response to receipt of a packet from a subscriber-side terminal apparatus, a packet indicating whether data distribution is required, identify the subscriber-side terminal apparatus that has transmitted the packet, and transmit a packet indicating an address for which whether the transfer of distribution data is required is designated to the subscriber-side terminal apparatus based on whether data distribution is required.

Abstract: An ATM cell multiplexer of the present invention controls the ATM cell transmission time assigned to each cell assembler/disassembler (CLAD) based on the number of cell assembler/disassemblers (CLAD), number of connections, and connection traffic volume. Accordingly it is capable of setting in real time a main table in the ATM cell multiplexer, in which transmission authorities corresponding to a number of established connections is assigned as much as possible at equal intervals in accordance with the connections thereof.

Abstract: The present invention relates to a method and device for connecting segments of a LAN with each other. Especially, the present invention provides a method and device in which the reconstruction of a network is unnecessary and the operation of the network can be maintained in the case of increase the number of apparatus or trouble of the device in which the spanning tree protocol is used.

Abstract: A device at the terminal unit and a device at the network support an interim local management (ILMI) protocol. When the power is applied to the device at the terminal unit, it notifies the device at the network of support range information about a VPI/VCI of the device at the terminal unit. The device at the network assigns a VPI/VCI to the device at the terminal unit according to the support range information about the VPI/VCI received in a cold start trap message from the device at the terminal unit when a signal is received from the device at the terminal unit.