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In June 1996, approximately two years after the enactment of CALEA, the Department of Justice (DOJ) issued the Electronic Surveillance Interface Document (ESI). The ESI set forth law enforcement surveillance capabilities, which were developed in consultation with law enforcement agency and industry representatives. In December 1997, the industry published Interim Standard J-STD-025 (known as the J-Standard) to meet the electronic surveillance capability requirements of CALEA. The J-Standard incorporated many of the standards set forth in the ESI but excluded several electronic surveillance capabilities deemed necessary to law enforcement.