the present disclosure relates to apparatuses and methods for terminating communication on a communication line between a carrier and at least one node located at a subsurface location . the apparatus may include a control member configured to initiate termination of communication in response to a controlled signal . the apparatus may also include a communication linkage configured to terminate the communication in a manner that cannot be remotely restored in response to the control member . the apparatus may also include a power source to maintain power to the communication linkage termination operation . the apparatus may be configured to use energy from the communication line to cause the communication linkage to terminate communication . the apparatus may be configured to use a communication linkage that is at least partially consumable . the method includes the use of the apparatus .