Patent ID: 7099302

Claim:
Data transmission network having at least one line termination device connected via a telephone line wired within a building to several network termination devices, wherein each network termination device is connected to a corresponding data communication device to form a local area network (LAN) comprising: a request message generator for generating a data transmission request message when the data communication device connected to the network termination device is sending data, wherein a data transmission request message comprises a request for data transmission of the data sent by the data transmission device, and an xDSL transceiver for transmitting an upstream data frame including the generated request message via the telephone line to the line termination device, the line termination device comprising: a selection unit for selecting network termination devices which have sent a data transmission request message depending on status information data of the network termination devices stored in storing devices of the line termination devices, wherein the status information includes addresses of the network termination devices and corresponding numbers of the required time slots received from the network termination devices in data transmission request messages, a grant message generator for generating data transmission grant messages for the selected network termination devices, wherein each data transmission grant message comprises a grant message opcode and an address of the selected network termination device, and an xDSL transceiver for broadcasting downstream data frames including the generated grant messages via the telephone line to the network termination devices.