(1) Electromagnetic interference that comes from an adjacent wire. "Alien" crosstalk is interference that comes from a wire in an adjacent cable, for example, when two or more twisted wire pair cables are bundled together.
(2) (Crosstalk) An earlier family of communications programs for DOS and Windows from Attachmate Corporation, Seattle, WA (www.attachmate.com). Crosstalk products were originally developed by Microstuf, Inc., later merged with DCA and then Attachmate. It was one of the first personal computer communications programs, originating in the CP/M days. Crosstalk used the Crosstalk Application Script Language (CASL).