V.90 (n)~ A data transmission standard that provides for up to 56000 bits per second (bps) communications over telephone lines. The transmission speed from the client-side modem is 33600 bps the same as for V.34. The transmission speed from the host-side modem such as an Internet service provider (ISP) or corporate network is up to 56000 bps with an average speed of 40000 to 50000 bps. When the host-side modem does not support this standard the alternative is V.34.