BSS BSSBLUHYBRIDIN-M Telephone Hybrid Card With 2 Analog Mic/Line InputsThe Soundweb London Telephone Hybrid Cards are designed to populate any of the four card slots on Soundweb London BLU 800, BLU 805, BLU 806, BLU 320, BLU 325, BLU 326, BLU 160 and BLU 120 devices. These cards enable Soundweb London devices to interface with a standard POTS (aka PSTN or Analog PBX) telephone network. The Soundweb London Telephone Hybrid Cards also have two analog inputs which allow each Telephone Hybrid Card to receive two microphone