Systems and Methods for reducing distortion due to bursts of upstream transmission in an HFC CATV network. In some preferred systems, the functionality of an Optical Network Unit (ONU) may occur within a node or amplifier along a direction upstream from a subscriber's home.

A method of converting legacy HFC CATV cable systems, which transmit data over the optical fiber portion of the system using the optical counterpart of analog RF waveforms, such as RF QAM waveforms transduced to corresponding optical QAM waveforms, to improved HFC CATV systems that transmit data over the optical fiber using optical fiber optimized protocols, such as Ethernet frames and other optical fiber optimized digital transport protocols. According to the method, most aspects of the legacy HFC CATV system may be retained, however at the CATV head end, the optical fiber transmitter system is replaced by an improved system that extracts the underlying symbols from legacy waveforms, packages these symbols into optical fiber optimized packets, and transmits downstream. The legacy optical fiber nodes are replaced with improved nodes capable of receiving the packets and remodulating the symbols into RF waveforms suitable for injection into the system's CATV cable.

In one embodiment, a cable distribution system that includes a head end and a remote fiber node that converts received data to analog data suitable to be provided on a coaxial cable for a plurality of customer devices. At least one of the head end and the remote fiber node including a set of commands that traverse a local file system where less than all of the set of commands that traverse the local file system are available to neither of a command line interface nor a graphical user interface. Also, it is configured to access a remote file system based upon a command that includes a label identifying an Internet Protocol address to the remote file system to obtain a file therefrom.

A method for determining the magnitude of leakage in a subscriber's premises CATV installation; a frequency multiplexer for coupling between an antenna and a receiver for the multiplexed frequencies; and, a method for a technician to certify a CATV subscriber's premises for the provision of CATV services are disclosed.

A method for determining the magnitude of leakage in a subscriber's premises CATV installation; a frequency multiplexer for coupling between an antenna and a receiver for the multiplexed frequencies; and, a method for a technician to certify a CATV subscriber's premises for the provision of CATV services are disclosed.

In one embodiment, a method receives a network topology of a distributed access architecture and a legacy video network. Video streams include characteristics that are associated with delivery via the legacy video network. The method selects a set of anchor points for a remote physical device in the distributed access architecture where the set of anchor points are associated with a geographic location of the remote physical device. A set of attribute labels are selected for the set of anchor points where the set of attribute labels associated with characteristics of the video streams. The method then generates a definition of video streams based on the anchor points and the attribute labels for a remote physical device configuration and generates the remote physical device configuration for video. The remote physical device configuration is used to provide the video streams to the remote physical device.

A network element of a cable television (CATV) network, said network element comprising one or more amplifier units for amplifying downstream signal transmission for digital output into one or more output channels; means for detecting output power of all active digital output channels; means for providing a predetermined correlation between the detected output power of said active digital output channels and a corresponding minimum bias current for said one or more amplifier units; and means for adjusting the bias current of said one or more amplifier units on the basis of the predetermined correlation.

An optical network includes a transmitter portion configured to transmit a digitized stream of symbols over a digital optical link, a mapping unit disposed within the transmitter portion and configured to code the transmitted digitized stream of symbols with a mapping code prior to transmission over the digital optical link, a receiver portion configured to recover the coded stream of symbols from the digital optical link, and a demapping unit disposed within the receiver portion and configured to map the recovered coded stream of symbols into an uncoded digitized signal corresponding to the digitized stream of symbols at the transmitter portion prior to coding by the mapping unit.

An optical network includes a transmitter portion configured to transmit a digitized stream of symbols over a digital optical link, a mapping unit disposed within the transmitter portion and configured to code the transmitted digitized stream of symbols with a mapping code prior to transmission over the digital optical link, a receiver portion configured to recover the coded stream of symbols from the digital optical link, and a demapping unit disposed within the receiver portion and configured to map the recovered coded stream of symbols into an uncoded digitized signal corresponding to the digitized stream of symbols at the transmitter portion prior to coding by the mapping unit.

Systems and methods for providing timing information from a R-MACHPHY device to a video core while the R-MACPHY device receives video data from the video core while operating in asynchronous mode. In some embodiments, the R-MACPHY device may alternately and selectively configure its mode of operation to alternate between synchronous mode and asynchronous mode, and provide the timing information to the video core when it switches to asynchronous mode.