That's my question. We had one cable modem connect it to a cmts and the top speed was 2.5 mbps for download and ~1.2 on upstream for a config file with 4mbps. A person told me that cable modems only can achieved 2 mbps. It's true?
Info for the test:
For downstream, 64qam, 6mhz channel width, Symbol Rate 5.056941 Msps
For upstream, Channel Width 3.200000 MHz, QPSK, Symbol Rate 2.560000 Msps
Thanks in advanced