most recent 30 from http://mrwatsoncomehere.com 2010-07-30T02:43:45Z http://mrwatsoncomehere.com/feeds/tag/optical http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mrwatsoncomehere.com/questions/11/what-is-an-express-orderwire Bruce Fitzsimons 2009-10-20T03:33:16Z 2010-07-27T15:22:57Z

<p>SDH has a byte set aside for a 64Kbps voice channel in the header (byte E2) with the title MS orderwire byte. </p> <p>Why? What is this for?</p>

http://mrwatsoncomehere.com/questions/8/what-is-the-difference-between-an-ho-and-lo-optical-link Bruce Fitzsimons 2009-10-13T07:10:47Z 2009-10-13T07:10:47Z

<p>I've seen references to HO and LO optical links. This apparently means High Order and Low Order, but that isn't a lot of help. I've seen references to eigenvalues on Wikipedia, but that wasn't clear either.</p> <p>What makes an LO link? Conversely what makes a HO link and why do we need to differentiate?</p>