Features:
- Interfaces up to 24 voice channels of a digital T1 trunk
- Supports standard D-4 framing format and robbed bit signaling
- Input and output of the card connects with an external Channel Service Unit (CSU)
System Requirements/Compatibility:
- Works with Isoetec Digital System/Executone Integrated Digital Systems (IDS™) 108, 228, 432 and 648