Methods and apparatus for transporting digital audio-related signals over
point-to-point, non-circuit-switched, non-packet-based, local area
connections. In one example, multiple digital audio-related signals are
combined as a time division multiplexed (TDM) serial bit stream. In
addition to the one or more multiplexed digital audio-related signals,
the TDM serial bit stream also may be encoded with other information that
pertains to one or more of the digital audio-related signals being
multiplexed (e.g., data rates of the signals, various data type or status
information, timing or other synchronization information, etc.). In one
aspect, the TDM serial bit stream is transmitted and received via
conventional packet-based network physical layer transceivers (e.g.,
Ethernet transceivers) that are particularly configured and controlled to
transmit and receive essentially continuous bit streams rather than data
packets. In another aspect, a "digital audio snake" comprising multiple
terminal units that each employs one or more packet-based transceivers is
implemented by stringing together two or more such terminal units as a
daisy chain connected by a communication medium.