Cisco Combination DS1 and DS3/EC1 backplane interface A - backplane

High-density EIAs are attached to the ONS 15310-MA shelf assembly backplane to provide up to 168 transmit and receive DS-1 connections through six Champ connectors per side (A and B) or six transmit and receive DS-3/EC-1 connections through six BNC connectors per side. The EIAs are designed to support DS-1, DS-3, and EC-1 signals. The appropriate cable assembly is required depending on the type of signal.