faxAnswerFaxPoll

typedef struct 
{
 DWORD size;
 DWORD modemtype;
     /* NFX_MODEM_TYPE_V17, NFX_MODEM_TYPE_V27,            */
     /* or NFX_MODEM_TYPE_V29             */
 DWORD minrate;  /* NFX_BIT_RATE_2400, NFX_BIT_RATE_4800,               */
     /* NFX_BIT_RATE_7200, or NFX_BIT_RATE_9600            */
 DWORD resolution;
     /* NFX_RESOLUTION_HIGH, NFX_RESOLUTION_LOW or */
     /* NFX_RESOLUTION_SUPER_HIGH            */
 DWORD encoding; /* NFX_ENCODE_1D, NFX_ENCODE_2D, or               */
     /* NFX_ENCODE_MMR            */
 DWORD pagewidth; 
     /* NFX_PAGE_WIDTH_A4, NFX_PAGE_WIDTH__B4, or            */
     /* NFX_PAGE_WIDTH_A3            */
 DWORD OTFmode;     /* NFX_OTF_NEVER, NFX_OTF_ALWAYS,             */
     /* or NFX_OTF_ONLY_IF_FAIL            */
 DWORD useECM;     /* NFX_YES or NFX_NO            */
 DWORD useCNG;     /* NFX_YES or NFX_NO            */
 DWORD PRIenabled;
     /* NFX_YES or NFX_NO            */
 DWORD timeout;    /* Number of seconds to wait for receiver            */
 DWORD retrainaction;
     /* NFX_RTN_REPEAT_PAGE or NFX_RTN_NEXT_PAGE            */
 DWORD addheader;
     /* NFX_YES or NFX_NO            */
 INT32 level;    /* Transmit level in tenths of dBm            */
     /*(-150 to -60)            */
 INT32 threshold;
     /* Lowest level for receive, in tenths of dBm */
 DWORD NSFlength;
     /* Length of NSF field or 0 if none            */
 char SID[NFX_MAX_SID];
     /* Subscriber ID string            */
 BYTE NSF[NFX_MAX_NSF];
     /* Default NSF for session            */
} FAX_TRANSMIT_PARMS;

Note: faxAnswerFaxPoll must be called within three seconds of receiving FAXMSG_POLLED, which is the event that indicates a poll request. If faxAnswerFaxPoll is not called within three seconds, the fax session times out and the application receives a FAXMSG_SESSION_DONE event.