Line noise is interference from other electrical appliances such as hair dryers, microwaves and vacuums. Line noise can also be caused by fluorescent lighting. A common example of line noise would by the "snow" that appears on your TV screen when running other appliances.
Line noise is interference with a modem connection; it shows up online as random characters. As the quality of modems and Internet connections rise, incidents of line noise decrease.
Static over a telephone line that interferes with network communications.
Static electricity, short service interruptions, "call alert" beeps, crosstalk from other telephone circuits, cosmic radiation, solar flares, death beams from outer space, or anything else which prevents the data you send through a modem from coming out accurately at the other end.
Random unwanted characters which can occur during a modem connection due to the fact that the telephone system was originally designed for voice. Higher quality modems filter out most line noise.
Line Noise is unwanted signals on a phone line that disrupt or slow communication between your modem and the modem at your ISP.
Disruption of communication due to interference on the telephone line.
Random signal disturbances that sometimes occur over telephone lines. Noise can disrupt communications and corrupt the transmitted data.
Any static or electromagnetic interference on a voice or data transmission line that interferes with telephone or network communications.
Static on a telephone line that causes trouble for modems and sometimes leased-line connections.