An apparatus and method for interleaving systematic bits and parity bits to generate an output sequence that can be transmitted in multi-slot packets from a base station to a remote station in a wireless communication system. In one embodiment, the medical device comprises a compliant electrode. Spoken words, for example, are out of synch with the lip movements. Advantageously, there may be a first terminal at a first end of the beam line to configure to transmit and terminate the optically encoded signals and a second terminal unit at the second end of the free space beam line configured to transmit and terminate the optically encoded signals. Other embodiments include a printed wire circuit board mounted to reduce the rotational-acceleration vibration interaction.