Through the discussion on the anti-seismic test for telecommunications equipment, researched the anti-seismic test method in GR-63-CORE criteria of NEBS (Network Equipment-Building System). For the problems that the system bandwidth was not enough and nonlinear factors existed in a seismic test, designed a TVC (three-variable control) algorithm for servo control of the seismic simulating shaking table, and also proposed a correcting iteration algorithm in frequency domain for the drive signal correction of the shaking table. The research results show that the TVC algorithm can effectively expand the bandwidth of the test system and extend its dynamic response range; and the correcting iteration algorithm can effectively compensate the influences of the nonlinear factors in the test system by on-line correcting the drive signal iteratively. The seismic tests of NEBS GR-63-CORE show that with the control strategies of the TVC algorithm and the correcting iteration algorithm, the shaking table can achieve seismic waveform replication tests precisely.