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Technology Stocks : The *NEW* Frank Coluccio Technology Forum -- Ignore unavailable to you. Want to Upgrade?

To: axial who wrote (3265)	7/15/2001 5:02:43 PM
From: Frank A. Coluccio	Read Replies (1) \| Respond to of 46821

With the exception of the twisted pair local loop and cable tv coax, there are no more copper transmission media. Leastwise, not spanning either of the distances that you've cited. Prior to fiber optics, the majority of traffic taking place over the WAN, including transoceanic submarine systems, took place over coaxial FDM systems, with the remainder being supported by terrestrial microwave networks and satellite. Today, however, the WAN is almost entirely fiber-based, with the exception of some residual microwave and satellite networks. So, the comparison between the relative delays (relative times to propogate a signal) over copper and fiber are mostly of academic value, only.