Carrier Core and Access Media Gateways, M3K Package 4 (Includes: Chassis Redundant Components, 1+1 TP-6310 Boards, 1 RTM for TP-6310 Active Board, 1 Redundant RTM for TP-6310 Passive Board, T3 and Electrical GbE Connectors, 2 System Alarm Boards Including LBR Vocoders)