This standard describes the interconnection details for N, where N=1,2...12, times 64 kilobit per second connections of teleprotection equipment to digital multiplexers using optical fiber. Requirements for both physical connection and the communications timing are also included.
IEEE Std C37.94-2013 history
2017IEEE Std C37.94-2017 IEEE Standard for N times 64 kbps Optical Fiber Interfaces between Teleprotection and Multiplexer Equipment
2013IEEE Std C37.94-2013 Standard for N times 64 kbps optical fiber interfaces between remote protection and multiplexer equipment
2002IEEE Std C37.94-2002 N Times 64 kilobit per second optical fiber interfaces between teleprotection and multiplexer equipment