Longshine LCS-8056C2 - Manual (Page 111)

Commands for Host-Processed Modems Reference Manual
100498E Conexant 4-1
4 Fax Class 1 and Fax Class 1.0 Commands
4.1 Fax I/O Processing
The fax I/O interface supports asynchronous serial and parallel interfaces. The character
format is 8 bits data, no parity, and 1 stop bit. Start and stop elements are removed from the
transmit data and added to the receive data. Both transmit and receive data are buffered. Flow
control using XON/XOFF or RTS/CTS is provided.
Unique control character strings are identified, filtered, or reinserted into the I/O data stream.
These control characters and their resultant action are described below.
4.1.1 DTE-to-Modem Transmit Data Stream
Characters Detected Action Taken
Delete characters.
Recognize as a string terminator and take appropriate action.
Replace with single character.
4.1.2 Modem-to-DTE Receive Data Stream
Characters Detected Action Taken
Insert extra ahead of .
The modem also identifies the end of a frame by inserting into the data stream
after the FCS bytes.
4.1.3 Fax Mode Selection
Fax Class 1 and Fax Class 1.0 commands are identified in Table 4-1. Fax Class 1.0 includes
all Fax Class 1 commands.