Chapter 9 Communications Circuits 99. 8 Crosstalk Crosstalk is interference that occurs when signals from one communications channel interfere with those on another channel 9.9.9 Dropouts Dropouts occur when a circuit suddenly goes dead for a period of time, similar to an electrical power outage www.gxmu.edu.cn9.9.8 Crosstalk Crosstalk is interference that occurs when signals from one communications channel interfere with those on another channel . 9.9.9 Dropouts Dropouts occur when a circuit suddenly goes dead for a period of time,similar to an electrical power outage. www.gxmu.edu.cn Chapter 9 Communications Circuits