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Date: Tue, 23 May 2006 14:10:39 -0400
To: Ian Smith <smithi@nimnet.asn.au>
From: Mike Tancsa <mike@sentex.net>
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Cc: freebsd-net@freebsd.org, Brian Candler <B.Candler@pobox.com>
Subject: Re: improving transport over lossy links ?
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At 06:15 AM 23/05/2006, Ian Smith wrote:

>I had a browse through /sys/dev/usb/{uft,ucom}* but was well out of my
>depth .. it =looks= like DCD (aka RLSD) changes should be picked up ok;
>perhaps you're right about some odd init string or such - good luck!


It looks like its an issue with the USB serial device and or driver. 
Whether the driver or the actual device (or both) not sure. If I put 
the same 2 modems put on 2 regular serial ports, ppp is able to see 
the carrier is down and drop the connection from the bundle.  Same 
init strings, only difference is the ports they were on.

         ---Mike