Re: Modem Speed
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: nielsen@primenet.com
Tucson, AZ AMPRnet: w6swe@w6swe.ampr.org
DM42nh http://www.primenet.com/~nielsen
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