Fine Resolution FAX Reception Fails

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 I am using a Practical Peripherals PM288MT II V.34 modem with mgetty and
rarely am able to receive a FAX sent by a FAX machine which uses "fine"
resolution. Normal resolution FAXes arrive without trouble as well as some
fine resolution FAXes sent by FAX modems. This is a sample log file entry of a
failure:

 05/09 11:43:11 dem mgetty: official release 1.0.0
 05/09 11:43:11 dem check for lockfiles
 05/09 11:43:11 dem locking the line
 05/09 11:43:11 dem lowering DTR to reset Modem
 05/09 11:43:12 dem send: \dATQ0V1H0[0d]
 05/09 11:43:13 dem waiting for ``OK'' ** found **
 05/09 11:43:13 dem send: ATZ[0d]
 05/09 11:43:13 dem waiting for ``OK'' ** found **
 05/09 11:43:13 dem mdm_send: 'AT+FCLASS=2.0' -> ERROR
 05/09 11:43:13 dem mdm_send: 'AT+FCLASS=2' -> OK
 05/09 11:43:13 dem mdm_send: 'AT+FCLASS=0' -> OK
 05/09 11:43:13 dem mdm_send: 'AT+FAA=1;+FCR=1' -> OK
 05/09 11:43:13 dem mdm_send: 'AT+FBOR=0' -> OK
 05/09 11:43:13 dem mdm_send: 'AT+FLID="(972) 212-5555"' -> OK
 05/09 11:43:13 dem mdm_send: 'AT+FDCC=1,5,0,2,0,0,0,0' -> OK
 05/09 11:43:14 dem waiting...
 05/09 11:44:18 dem waiting for ``RING'' ** found **
 05/09 11:44:18 dem send: ATA[0d]
 05/09 11:44:18 dem waiting for ``CONNECT''
 05/09 11:44:25 dem found action string: ``+FCON''
 05/09 11:44:25 dem start fax receiver...
 05/09 11:44:25 dem fax_wait_for(OK)
 05/09 11:44:26 dem fax_id: '+FTSI:"972.555.1212  "'
 05/09 11:44:27 dem transmission par.: '+FDCS:1,5,0,2,0,0,0,0'** found **
 05/09 11:44:27 dem fax_send: 'AT+FDR'
 05/09 11:44:27 dem fax_wait_for(CONNECT)
 05/09 11:44:44 dem transmission par.: '+FDCS:1,5,0,2,0,0,0,0'** found **
 05/09 11:44:44 dem fax_get_page_data: receiving /var/spool/fax/incoming/ff3735462em-_972.555.1212-_.01...
 05/09 11:44:47 dem fax_get_page_data: page end, bytes received: 4693
 05/09 11:44:47 dem fax_wait_for(OK)
 05/09 11:44:47 dem page status: +FPTS:1
 05/09 11:44:57 dem connection hangup: '+FHNG:100'** found **
 05/09 11:44:57 ##### fax dev=modem, pid=11335, caller=none, name='', id='_972.555.1212  _', +FHNG=100, pages=1, time=00:00:39

Is this likely a limitation of the modem or can the mgetty configuration be
changed to receive FAX machine fine resolution FAXes?

 Thank you.

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