The data transmission rates of the V.34 protocol. 28,800 or 33,600 bits per second. Note that it is accurate to refer to this speed as 28,800 bps, NOT 28,800 baud. This high rate of speed is accomplished by using a higher transmission frequency than all previous modems. Once the modem and software are installed and configured correctly, the speed of a connexion to another modem is entirely dependent upon the quality of the phone lines between the two modems, which can differ with every single phone call. Your effective throughput of data can be increased by using data compression. With V.42 bis, an effective 4 to 1 compression is possible. With these protocols, a total throughput of 115,200 bps is possible between systems.