Russound ACA-E5 RS-232 protocol

Is there anybody that can point me out to the RS232 protocol for this Russound ACA-E5 (Sphere)?
Also, I've seen there is an Ethernet port. Can it be used for external control or is it only for Russound components?
Thanks for the help.
Also, I've seen there is an Ethernet port. Can it be used for external control or is it only for Russound components?
Thanks for the help.
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