When trying to send a fax with Faxware, the connection establishes for one charging unit and then the connection is disconnected with the error message 0x3304.

Cause:

FaxWare tries to send in "Faxplus" -Mode first.  It detects that the partner cannot handle this, releases the line and retries to send the fax with G3 standard.  The partner machine has not noticed that the previous call was a failure and it is still off hook.

Solution:

Set the following In the TLD.INI:

ISDN_Service_FaxG3=1

DefaultFaxPlus=False