Meaning; DIA: Defense Intelligence Agency (USA) DIA: Denver International Airport: DIA: Department of Internal Affairs
Crosstalk is a disturbance caused by the electric or magnetic fields of one telecommunication signal affecting a signal in an adjacent circuit. In an telephone circuit, crosstalk can result in your hearing part of a voice conversation from another circuit. The phenomenon that causes crosstalk is called electromagnetic interference (EMI). It can occur in microcircuits within computers and audio equipment as well as within network circuits.
If you are using a landline phone (one that is connected to a telephone jack by a telephone cord), then the source of the cross-talk is a defect/problem with the telephone lines or equipment. One potential cause is when the phone lines in a cross-connection box (in your neighborhood) get wet or there is very high humidity. Water is a conductor, and if the lines get wet, the audio signal can be induced (jump) from one line to another, causing cross-talk. Another potential cause is the telephone line card (an electrical circuit device) at the Telephone Company Dial Central Office (DCO). The line card provides your phone with a dial tone, and enables you to make and receive calls. Sometimes these circuits malfunction and allow cross-talk to occur. There's nothing you can do about this type of interference except to call your telephone service provider and complain about the cross-talk issues you are having.