Patent ID: 9231725
Filing Date: 2016-01-05
CPC Classification: H04J

Claim Text:
1. A method of configuring an optical network terminal of a wavelength division multiplexed passive optical network, the method comprising: a. sequentially setting a transmission wavelength of a tunable optical filter at the optical network terminal to one or more wavelengths of a pre-selected plurality of transmission wavelengths until a said wavelength is identified for which no downstream optical signal from an optical line terminal of the wavelength division multiplexed passive optical network is detected; b. determining whether a transmitter operable at said identified transmission wavelength is present at the optical line terminal and is available to be assigned to communicate with the optical network terminal; c. if a said transmitter is determined to be present and available, maintaining the transmission wavelength of the tunable optical filter at said identified transmission wavelength and assigning the optical network terminal to the optical line terminal as a subscriber at said identified transmission wavelength; and d. if a said transmitter is determined to be one of not present and not available, recommencing the method at step a. for one or more further wavelengths of said pre-selected plurality of wavelengths.