flexfax: Unspecified Transmit Phase D error

[David Kranz <dak@dca-uk.net>]

HI.

I am having a problem sending faxes to particular companies machines. The 
following error is reported in the log:

Feb 19 16:21:50.19: [ 6995]: SEND send EOP (no more pages or documents)
Feb 19 16:21:50.19: [ 6995]: <-- data [2]
Feb 19 16:24:50.19: [ 6995]: REMOTE HANGUP: Unspecified Transmit Phase D error,
 including +FPHCTO timeout between data and +FET command (code 50)
Feb 19 16:24:50.19: [ 6995]: <-- [7:AT+FKS\r]
Feb 19 16:25:20.19: [ 6995]: MODEM <Timeout>
Feb 19 16:25:20.19: [ 6995]: <-- [5:ATH0\r]
Feb 19 16:25:25.19: [ 6995]: MODEM <Timeout>
Feb 19 16:25:25.19: [ 6995]: SESSION END

The end result at the other end is a fax with the first 5-6 lines OK but the 
rest are all squished and partially printed..
This only happens to a few faxes that I send.
I'm using hylafax 4.0 and Linux 2.2.1 witha US Robotics (3com) 56K modem

Cheers

Dave Kranz