A method and system for detecting fraud in an electronic session performed over a network, the session including communications between a purported customer and a bank operating system, the communications from the customer including headers. The water barrier can be provided inside the dam body or close to the upstream face. They may be administered to patients to alleviate pain, produce analgesic effects, or assist in cases of narcotics withdrawal, and may also be used as probes for receptor activity. In a hybrid telephone network containing PSTN, VoIP and cellular telephones, the telephone terminals may be appropriate gateways equipped with CWCID protocol transmission and reception capability. Based on the configuration identified, the controller implements one of a plurality of power management algorithms.