Samsung OS7200/0S7400 16-port DLI card. Supports the interface to 16 Digital (TDM) terminals. The OS DLI-2 can be inserted in any Main or Expansion cabinet "Slot" except "Slot 0". This card is a sixteen circuit digital station interface card that provides 1B+D service when installed in any universal card slot in all cabinets. Keyset daughter boards will not work when connected to this card. 5 YEAR WARRANTY!