Paul B. Wrote: > Is that actually documented so? I can't see how they do it. In fact, >I still haven't figured (without recourse to the documentation which I >trust *is* readily available on the site) whether this system is analog >or digital. > > If analog, then duplexing must be on the basis of a characteristic >impedance and grounding would be *critical* to the system. Tying three >lines together would create an impedance mismatch which would increase >side-tone to each station as it speaks. > > If digital, then it uses either time-division multiplexing (CSMA/CD) >which would be adaptable to multiple stations, or ternary multiplexing >which would have exactly the same problem tying multiple lines as an >analog system, but would be far more noise-tolerant. > > If you know the answers to the above, *then* you might be in a >position to figure the two-wire version relatively easily. I could duct-tape 48 SLICs together, wrap them in aluminium wire, dip them into a solder bath for 4 hours, pull them out, douse them in vanilla pudding, parade them down an obscure avenue in Chicago, paint them with stars and stripes, nominate them for president, back them out in a shroud of controversy, put them on my head, spin around 39 times, connect them to a 450 VAC, 46.9 Hz, 900 KA power supply then smuggle them into Manitoba and buy a bottle of water for them, followed by spitting on them and gluing them, with sheep mucus, to the front right fender of a '58 ford Fairlane. I could then use an oxygen lance and cut the front half of the Fairlane off and sell it to a podiatrist, but not before peeling of the 48 SLICs and, using woodworkers glue, 3 cans of baked beans, a bottle of MSG and a steam roller, affix them to a PCB made out of wax, nail filings and kitty litter. Am I in a position to do that? - Keelan Lightfoot