The 56 kbit/s rate is only possible from the central office to the user site (downlink). In the United States, government regulation limits the maximum power output, resulting in a maximum data rate of 53.3 kbit/s. The uplink (from the user to the central office) still uses V.34 technology at 33.6 kbit/s.
Hello,I am interested in communicating with arduino over a telephone line. What is the maximum bytes per second that can be achieved? Is fsk the the fastest or are there other methods? Any example links would be appreciated also. Thanks,-ren