Patent ID: 11876556
Assignee: CABLE TELEVISION LABORATORIES, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. An optical line terminal, comprising:
a memory storing instructions for controlling the digital signal processor to separate a MAC-layer signal received from a media access control (MAC) layer into the initial communication-channel signal and the initial data-channel signal;
a digital signal processor with out-of-band communication channel functionality to:
encode, using a first signal-coding scheme of a coherent optical link, the initial communication-channel signal into a communication-channel signal occupying a first frequency band;
encode, using a second signal-coding scheme, an initial data-channel signal into the data-channel signal occupying a second frequency band that does not overlap the first frequency band; and
combine the communication-channel signal and the data-channel signal to yield a combined signal.