> has anyone actually been satisfied with the performance of these > powerline signalling devices ?
Universal Powerline Bus is a vast improvement over the original X10. I believe the X10 devices used a 4V signal during the zero crossing point of the AC voltage to transmit 1 bit. Needless to say this made X10 slow, susceptible to line noise and not very reliable. IIRC X10 is only 75% reliable. By contrast, UPB is 20-40 times faster, it uses a higher signaling voltage so line noise isn't a big factor any more and has the advantage of controlling 250 times more devices than X10. This will help to prevent stray signals from the neighbors controller from accidentally controlling your devices. UPB is supposed to be 99.9% reliable with a latency of less than 100 milliseconds. Granted that still leaves a tenth of a percent of uncertainly. However that is without resorting to filters, couplers and the like. > Granted in an existing situation there may not be a way to run more > wires, but I evaluated them a while back and decided to stay away. You may want to take another look at them. Just like Asterisk has made great strides since the release of 0.7, UPB has brought the quality level way up. Of course this higher quality also has a higher price. John _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
