Method of controlling connection between nodes in digital interface

A method of controlling a connection for receiving A/V signals in a destination node, the method comprising:

• transmitting a first connection command for receiving the A/V signals from a source node, to the source node;
• receiving a second connection command based on the first connection command, from the source node;
• setting a connection with the source node based on the second connection command;
• and
• receiving A/V signals via the connection,
• wherein at least one of the first connection command and the second connection command includes at least one of a subfunction field, a connection field, a source node identification field, a destination node identification field, a bandwidth field, a source channel number field,
• wherein the subfunction field indicates a connection type,
• wherein the connection field indicates one of the making of the connection and the breaking of the connection,
• wherein the source node identification field identifies a source node for transmitting the data stream,
• wherein the destination node identification field identifies a destination node,
• wherein the bandwidth field represents a bandwidth allocated from the source node, and
• wherein the source channel number field represents a source channel number allocated from the source node.