E3 UFR The E3 Unchannelized Frame Relay Card provides a single standards-compliant E3 interface to the 7470 or 7670 ESE system. This interface terminates one unchannelized frame relay stream and will perform standards-based frame switching network-interwo

E3 UFR The E3 Unchannelized Frame Relay Card provides a single standards-compliant E3 interface to the 7470 or 7670 ESE system. This interface terminates one unchannelized frame relay stream and will perform standards-based frame switching network-interworking or service-interworking. In the 7470, the card requires MAU 90-4919-01. In the 7670 ESE, adapter card 90-7307-02 and MAU 90-7308-01 are necessary.