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To: Kachina who wrote (283)	3/5/1999 4:48:00 PM
From: Frank A. Coluccio	Read Replies (1) \| Respond to of 626

It appears to me that the Central Asia Research and Remediation Exchange is located in San Diego, not in Southeast Asia. The exchange is instead spearheading initiatives, I take it, that would be implemented in Southeast Asia, among other international locales. The sale or lease of individual fibers on transoceanic routes is very questionable at this time, by anyone other than consortia or the very largest of international carriers. As it stands now, the largest underseas cable providers such as Global Crossings and Project Oxygen (eventually) are/will employ only 4 active pairs (8 live strands, 4 eastbound and 4 westbound), which are aggregated or mulitplexed to derive ultra-high speeds (many different streams combined into one statement of speed). These submarine cables may also have one or two spare pairs for backups and/or surveillance, switching supervision in the event of failover (self-healing during outages), and other forms of overhead for use between the service entities who make up a consortium, say. The prospect of an underseas deployment by SR technologies brings up several questions, some of which I was reserving for a later discussion, and they would even apply for the longer terrestrial transmission systems. To mention just a couple of them briefly at this time, (1) What are the repeater spacing intervals that would be required by the standard SR model? and, (2) Does the spectral requirement of the SR stream demand, in fact, an entire strand, or will it function properly over an individual lambda on a fiber which must respect the normal intervals of repeater spacing that other fibers in a given sheath must respect? I know that I have asked this repeatedly but I have yet to receive a definitive reply with bookends on it. Or will repeater spacings for SR fiber bundles be different? Shorter or longer than established norms for traditional carrier systems? --- BTW, I have had extensive involvement at times in a number of university undertakings where the primary focus has been implementing distance learning infrastructures. For homebound, community centers, jails, cross country, and for the hearing impaired. DL for the hearing impaired is especially demanding on video quality, since the usual jerkiness and other artifacts associated with low speed or even higher speed bundles of ISDN lines often don't cut it when American Sign is employed over that medium. So, this topic now has my interest from another perspective, as well. Thanks for sharing this information. Regards, Frank C.