ADSL lines that are much faster download than upload do not do well when simultaneous uploads AND downloads are required. To operate the download channel at full speed, a large portion of the upload channel is required. If the upload channel is busy with something else, TOTAL throughput can drop severely as the competition for resources slows down both activities. Users have also reported that streaming video both in and out at the same time results in very poor throughput - much lower than one would expect looking at the speeds available. There is not yet any recommendation or information on what can be done to get around this problem, other than changing to a DSL service with more symmetric capacity.
last modified: 2002-11-02 08:43:30