DRS is equipment that it can be used with conclusive evidence when problem about conversation by telephone is occurred and saved the call- time and the call- conversation classified by telephone number in processing E1-signal to DSP in HDD. Also it is possible to search and play in the web with the telephone number DB.
It is usefully applied management of accident with client in recording client consultation, dissatisfaction acceptance, mail-order business, delinquent management and questions of every kind in a police station, a fire station, a financial agency, credit card company, home shopping, customer consulting the security corporation, call center.