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To: David Charlton who wrote (4838)	9/9/2000 8:58:44 PM
From: Frank A. Coluccio	Read Replies (1) \| Respond to of 5853

David, I am truly pleased to make your acquaintance. I've used the bandwidth limiter anecdote several times here in SI in the past, but I never thought I'd come into contact with the patent holder of it. Thanks for the enlightenment. I first learned of the limiter in 1987, I believe, from some LSO (Limited Service Offering) folks at the NY Telephone subsidiary of NYNEX. They led me to believe that it was their intent to experiment with the inline unit at some point in order to tariff ANSI FDDI and IEEE Ethernet/Token Ring types of services in the MAN, in addition to making limited doses of dark available for IBM Channel Extension and the emerging ESCON requirements of the time. The prospect of using such an abbreviated form of dak wouldn't have done us any good at the time because we were looking at the top of the line fiber transimission platforms from NEC and Alcatel that ran as high as 1.8 Gb/s, driving asynchronous T3s. This was before the SONET standard was ratified. A couple of years later NYNEX unveiled their "ENTERPRISE" networking platform that actually made some of these native LAN protocol services available, but they didn't provide them over dark, per se. Instead, they used T1 and T3 channelized encapsulation and Layer 2 bridging techniques, as did MFS and several others of that day in order to leverage their new SONET platforms and DCSes (digital cross-connects) to the fullest. I hope that in my wording of these events I didn't sound disparaging to any of the work that you put into the design. That certainly wasn't my intent. My criticism, of course, has always been directed at the incumbent carriers who, instead of creating the supply that would spur the demand, opted to hoard whatever unoptimized supply that they had. Times change. Today SBC and VZ are both either finalizing their field tests, or outright delivering, Gb Ethernet over dark, and over lambdas that are sharing fibers being used for traditional services. And so it goes. FAC