flexfax: MultiTECH 2834ZDX modems; send errors

["Neal E. Breakfield" <nealb@lafix.org>]

I am using Hylafax 4.1 beta on a Red Hat 6.0 system for broadcast faxing with a variety of modems (8-10 in the modem pool at any given time).  I am trying out a MultiTECH 2834ZDX external modem, and am considering purchasing 9 more such modems (from a local ISP that is phasing out analog modems) to standardize my modem pool.  I have read good things about this MultiTECH model in this FAQ, but I have been getting a large number of errors in the transmissions (like 225 success with 50 errors out of about 300 attempts... as opposed to about 230 successes with 10 errors out of about 300 attempts as an average for the other modems).

The two most common are "No response to EOP repeated 3 times" and "No answer (T.30 T1 timeout)."  By far, the EOP error is the more common of the two.  I have tried the suggestion of setting S38 register to 35 instead of the default 43 (see Q95 http://www.hylafax.org/HylaFAQ/Q95.html).  Yes, I knoiw that this is for receiving, not sending, but I thought it might help...

Anyway, I was wondering if anyone had encountered such a problem with this model.  I believe that most of the EOP errors are actually going through, but I have not had a chance to verify yet.  All the same, I would like to eliminate the error altogether.  MultiTech is sending me a firmware upgrade from version 0312 to 0317i.  Anybody got a clue if this will fix it, or is there a config file option or register setting I should try?

Thanks,

Neal E. Breakfield
nealb@lafix.org