... FXO voice cards, ISDN interface cards, CPOS interface cards and EPON/GPON interface cards. The cards can be classified into SIC ... backplane provides 12 V voltage for the 1SA/2SA.GPON/EPON Dual-Mode Interface CardSIC cardSupports OLT clock synchronization but not ... the 1588 function.Supports EPON/GPON but not GE.Supports the DyingGasp function.Supports rogue ...