Very Short Reach Optics Standard. (Network news).
The standard addresses the urgent need for low cost high speed optical links to interconnect colocated equipment such as routers, Dense Wavelength Division Multiplex terminals and Synchronous Digital Hierarchy (SDH) add-drop multiplexers. Interface specifications in Recommendation ITU-T G.693 cover a wide range of optical attenuation values so that interfaces can be optimized for each specific application reducing overall cost. The new standard focuses on target link distances up to 2 km. Other existing ITU-T standards on optical interfaces address longer link distances.
This standard has been agreed under the fast-track approval procedure called AAP. Under this procedure, a comment period is initiated when a study group gives consent to approve the draft text of a recommendation which it considers mature. The combined announcement and comment period take just under two months. The ITU-T G.693 is therefore expected to become effective before the end of the year if the comment period yields a positive outcome.
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|Publication:||Database and Network Journal|
|Article Type:||Brief Article|
|Date:||Dec 1, 2001|
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