However, during a terminal session, data compression can slow down your character echoing. If you decide to use data compression, use V.42 bis if you can. If your modem doesn't support V.42 bis, you can use MNP5 instead. In most modems, data compression is on by default. Most text files, databases, and spreadsheets are quite compressible.
Most binary files are somewhat compressible.
For example, this means that if your modem speed is 14.4 Kbps, you might set your asynchronous port speed to 57.6 Kbps, or to 115.2 Kbps if you have a 28.8 Kbps modem. Note, however, that not all workstation asynchronous ports can reliably handle these high data transmission rates. CTS flow control allows the modem to run at the higher speeds provided by data compression. Other than those already mentioned, use your modem's default settings.