Note: This diagram illustrates the scheme in which the MAIN 1 and MAIN 2 relays are connected to C37.94 Teleprotection equipment (Teleprotection over redundant 1+1 C37.94 intefaces) to implement the concept of "Reliable Communications" and provide 1+1 provide 1+1 Redundancy for establishing a resillient protection network. The GOOSE PchA and PchB Redundant Protection Scheme are used to provide alternate tripping paths for both MAIN 1 and MAIN 2 protection relays, to provide fail-safe distance protection.