Ascend MAX 6000 BNC to RJ-48C straight-through cable. Part Number: 2510-0272-001. This cable adapts a modular E1 port on the MAX to coaxial cable E1 lines. You must also set the jumpers within the MAX for 50 Ohm service. Wiring as follows: RJ48-C Male #1 Receive to BNC Male #2 Sleeve Transmit; RJ48-C Male #2 Receive to BNC Male #2 Center Transmit; RJ48-C Male #4 Transmit to BNC Male #1 Sleeve Receive; RJ48-C Male #5 Transmit to BNC Male #1 Center Receive.