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List:       hylafax
Subject:    Re: [hylafax-users] Failed to properly open control V.34 channel.
From:       Jeff Dubin <jd-hflist () dreamallday ! com>
Date:       2013-11-21 2:22:54
Message-ID: 528D6E7E.50904 () dreamallday ! com
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On 11/20/2013 6:18 PM, Lee Howard wrote:
> On 10/03/2013 06:58 PM, N. Yaakov Ziskind wrote:
>> So, I replaced my modem with a Multi-Tech modem (as folks here
>> recommended), model 'MT9234MU MultiMobile USB 56k Modem', and I'm still
>> having problems. Latest fax failed with "Failed to properly open control
>> V.34 channel."
>>
>> Later (second try), it succeeded. Anything I should/can do?
> So... tell us about your fax phone line.  Is it VoIP?
I was having issues with an MT9234ZBA-USB which looked like phone line 
corruption.  I had an identical modem working great on a similar PC, and 
the only significant difference I could spot was that usbutils, with 
libusb1 as a dependency, was installed. Installing those on the problem 
PC fixed things immediately.  The modem is now rock solid, errors are 
rare, and it continues to work well.  I'm guessing libusb1 was the 
cure.  Don't know why, but it worked for me, and it's something worth 
looking into.  I was running CentOS 6.3.  I don't know what OS/distro 
you're running, but if appropriate, check out libusb1 (and perhaps 
usbutils) and see if that helps.  And if it does, please post back here 
to let me know if this really did the trick, or if I just got lucky.

Good luck!
Jeff


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