The Crocus Quad E1 Interface allows for the simultaneous transport of up to 4 G.703/E1 connections over any type of fibre medium.
It is used as an interface in the Crocus FO10M, a versatile 10Mbps modem for transmission over optical media, the Crocus FO45M, and the Crocus E3 Mux. The interface board fits in both the desktop
and the card-versions of the Crocus FO series of modems, allowing for a cost-effective solution for both end-user and central-office equipment.
Thanks to integrated bit-stuffing algorithms, the four available G.703 interfaces on the board allow for the connection of totally independent applications.