Patent ID: 8897319

Claim:
A communication device apparatus for communicating with other devices over a control network, the communication device apparatus comprising: a communication port configured to connect to a control network; a processing device operatively connected to the communication port to control receiving and sending communications over the control network, the processing device configured to communicate, during transmission of a message packet over the control network according to a first protocol, a second message embedded within the message packet using a second protocol; wherein the first protocol is defined in part by: a receiving device checking at a sample point within a received first protocol bit to determine a value of the bit, and the receiving device adjusting a position of the sample point within the received first protocol bit in response to sensing a transition edge within a defined portion of the received first protocol bit; wherein the processing device is further configured to transmit a series of bits according to the first protocol having the transition edge to effect movement of the sample point for a receiving communication device to provide additional room within a first protocol bit in which to embed the second message using the second protocol.