ATCommands
Increasing Data Throughput with Error Correction & Data Compression
Data throughput refers to the amount of data being transferred. Error correction and data compression allow you to increase data throughput in comparison to if error correction and data compression were not selected. To allow error correction and data compression to operate with the highest possible throughput, the terminal speed of your modem (the speed it communicates with your computer) must be higher than the line speed (the speed it communicates with the remote modem).
The best way to operate with error correction and data compression is to set your modem for a constant speed of 57,600 bps, 115,200 bps or higher (set the terminal speed of your computer to 57,600 bps, 115,200 bps or higher and issue the command AT\N3 to the modem) with flow control. RTS/CTS flow control is the preferred form of flow control. Your communications software must also be set to use the same type of flow control.
☞Some computers cannot cope with receiving data at speeds above 19,200 bps. If you wish to run at high speeds, you should install a COM port that has a 16550 chip in place of your regular COM port. The 16550 chip allows your computer to accept data at very high speeds.
Page 33