Your question about SiemensOptiset E ISDN Adapter

Adapter with S0-interface for connection of ISDN terminals (PC with S0 card, Fax Gr. 4 video set / kit).

• For S0-implementations (max. 2), e.g. Fax IV, ISDN data terminal, or video communications equipment.
• With connected ISDN adapter no additional phone or analog adapter can be used
• multi-protocol operation is possible (1TR6 / EDSS1 & Cornet)
• No power at the interface
• For Optiset E Basic, Advance, Advance Plus, Memory, Conference