Patent ID: 7280807

Claim:
A half-duplex communication device identified by an initiator identification code comprising: a control device to receive a first identification code and a second identification code stored in a memory, transmit the initiator identification code, the first identification code and the second identification code directly and without using an intermediate network to a plurality of transceivers, each transceiver identified by a unique transceiver identification code, receive first acknowledgment information from a first transceiver of the plurality of transceivers in response to the first transceiver determining that the first identification code matches the first transceiver's unique transceiver identification code, and receive second acknowledgment information form a second transceiver of the plurality of transceivers in response to the second transceiver determining that the second identification code matches the second transceiver's unique transceiver identification code, wherein the first acknowledgment information includes the first identification code and the second acknowledgment information includes the second identification code.