Additional information: 1. The same application, same environment, if RTF Trace is turned off. The program will NOT crash after fx_sendfax() is called, the TIFF/F can be sent successfully if it is a single page TIFF/F. 2. If the TIFF/F is a multi-pages one, even if the RTF Trace is turned off, the program will still crash, during the sending of the second page (between the 1st TFX_PHASED and 2nd TFX_PHASED). 3. The dxxxBnCm devices are opened using fx_open(). 4. The mapping of the dtiBxTy devices and the dxxxBnCm devices are one-to-one predefined mapping. I use a configuration file to define the mapping manual. 5. The structures used like IOTT, are all static variables, per channel based, each channel has its own set. 6. The handles of the fax files for sending are opened before calliing fx_sendfax(), and closed on GCEV_DISCONNECTED.
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