At a network segmentation, upgrade or topology modification step can occur the situation that a relative new optical device needs a further return path module or simply an another return path module with extended bandwidth or optical power, possibly with a CWDM wavelength. If the searched module is no more available, causes to high CAPEX or needs an extra function (e.g. an integrated pilot generator), Comtech will create it dedicated for your application. UPC Hungary has already resorted this service for its existing Harmonic and Antec Nodes.