> The ideas behind token ring underlies DOCIS. > While not technically TR, it does use a token that moves from device to device. I assume you typo'd DOCSIS th

> The ideas behind token ring underlies DOCIS. > While not technically TR, it does use a token that moves from device to device. I assume you typo'd DOCSIS there, but no, DOCSIS does not use a token; it uses separate channels for down- & uplink, and the uplink channels are TDMA and/or CDMA depending on DOCSIS version.