On Feb 6, 2009, at 1:28 PM, DJ Delorie wrote: >> And for the past 10-15 years or so, the "last mile" of most T1 data >> circuits have been delivered via a form of DSL, and they typically >> have no voice support either. > > Not mine. I got all four wires :-)
On your side of the smartjack, I'm sure you do. But from that to your local CO, it's almost definitely a two-wire DSL circuit. If it's four wires all the way to the CO, that's pretty unusual, and has been since probably 1997 or so. The smartjack is a box of DSP that has a two-wire DSL circuit on the telco side and synthesizes a four-wire T1 (for connection to a standard CSU) on the customer-facing side. -Dave -- Dave McGuire Port Charlotte, FL _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user