Some fax machines don't acknowledge page receipt

[Matt Bonneau <matt@eggs.org>]

I have been using hylafax on a linux machine running redhat 3.0.3 for a
whiole and everything has been running great.  But just recently I
upgraded to redhat 4.1, after that I have not been able to get faxes to
work correctly.  The kernel had also been upgraded from 1.2.13 to 2.0.27.
I have downloaded later versions of hylafax and binary distributions,
tried different modem configurations, but no matter what I do some fax
machines still give me problems.

Some fax machines that I send to receive a page fine but hylafax doesn;t
think so and sends it again.  people end up getting 9 identical pages and
then the fax will fail.  Here is the part of the script where it fails

Your facsimile job to 14176784335 failed because:
    Unable to transmit page (giving up after 3 attempts); Giving up after 3 attempts to send same page

    ---- Transcript of session follows ----

Feb 25 16:07:39.45: [23669]: REMOTE best rate 9600 bit/s
Feb 25 16:07:39.45: [23669]: REMOTE max page width 1728 pixels in 215 mm
Feb 25 16:07:39.45: [23669]: REMOTE max unlimited page length 
Feb 25 16:07:39.45: [23669]: REMOTE best vres 7.7 line/mm
Feb 25 16:07:39.45: [23669]: REMOTE best format 2-D MR
Feb 25 16:07:39.46: [23669]: REMOTE best 20 ms/scanline
Feb 25 16:07:39.46: [23669]: USE 9600 bit/s
Feb 25 16:07:39.46: [23669]: USE 20 ms/scanline
Feb 25 16:07:39.46: [23669]: SEND file "docq/doc28677.ps;71"
Feb 25 16:07:39.46: [23669]: USE page width 1728 pixels in 215 mm
Feb 25 16:07:39.46: [23669]: USE unlimited page length 
Feb 25 16:07:39.46: [23669]: USE 7.7 line/mm
Feb 25 16:07:39.46: [23669]: USE 2-D MR
Feb 25 16:07:39.46: [23669]: <-- [23:AT+FIS=1,3,0,2,1,0,0,5\r]
Feb 25 16:07:39.58: [23669]: --> [2:OK]
Feb 25 16:07:39.58: [23669]: <-- [7:AT+FDT\r]
Feb 25 16:07:45.27: [23669]: --> [20:+FCS:1,3,0,2,1,0,0,5]
Feb 25 16:07:45.82: [23669]: --> [7:CONNECT]
Feb 25 16:07:45.82: [23669]: SEND begin page
Feb 25 16:08:26.44: [23669]: SENT 35402 bytes of data
Feb 25 16:08:26.44: [23669]: SEND 2D RTC
Feb 25 16:08:26.44: [23669]: SEND end page
Feb 25 16:08:26.44: [23669]: SEND send MPS (more pages, same document)
Feb 25 16:08:43.97: [23669]: --> [5:ERROR]
Feb 25 16:08:43.97: [23669]: SEND recv RTN (retrain negative)
Feb 25 16:08:43.97: [23669]: <-- [7:AT+FDT\r]
Feb 25 16:08:49.70: [23669]: --> [20:+FCS:1,3,0,2,1,0,0,5]
Feb 25 16:08:50.24: [23669]: --> [7:CONNECT]
Feb 25 16:08:50.24: [23669]: SEND begin page

Then it sends over and over again, but the receiving fax has already
received the page.

Any help would be greatly apreciated.

Matt Bonneau
matt@eggs.org