In addition to line noise, bandwidth and/or phase shifts can sometimes limit the connection, particularly if there are analog-to-digital conversions taking place, which happens when the telco combines multiple lines onto a pair of copper wires. I can only get 24.0Kbps here :-(
USR (now 3com) has a test number to check out your line, 1-847-262-6000. For details, see: <http://www.3com.com/56k/need4_56k/linetest.html> Bob On Tue, 22 Sep 1998, Mike Patterson wrote: > > Hi there. > > A friend of mine and I both recently got Zoom 56k Modems to allow my friend > to hook into my system. Unfortunately, my friend can only connect at 26400 > BPS, > but we aren't sure why. > > # setserial -a /dev/ttyS2 > /dev/ttyS2, Line 2, UART: 16550A, Port: 0x03e8, IRQ: 4 > Baud_base: 115200, close_delay: 50, divisor: 0 > closing_wait: 3000, closing_wait2: infinte > Flags: spd_vhi skip_test > > > Any ideas? I would think that even with minor line noise, we'd be able to > connect at 33.6. If the diagnosis is line noise, is there a way we can test > this? > > Also, my friend is connecting with a Mac (one of the new G3s) is there any > settings they should be looking at? > > --Mike Patterson ---- Bob Nielsen Internet: [EMAIL PROTECTED] Tucson, AZ AMPRnet: [EMAIL PROTECTED] DM42nh http://www.primenet.com/~nielsen
