ORking> (DOCSIS) ITU-approved interface requirements fORcable modems involved in high-speed data distribution over a cable television netwORk. DOCSIS compatible equipment uses a 6 MHz carrier band fORdownstream, using 64 and 256 QAM (ITU Annex B), and QPSK and 16 QAM fORupstream, allowing up to 36 and 10 Mb/s, respectively fOR downstream and upstream channels. CableLabs FAQ . (2001-07-10)