Approved 31 206 ZCTA of TransmissionSDH Transmission SDH after sales engineer Exam – Success Pathway Course

[31 206 ZCTA of TransmissionSDH Transmission SDH after sales engineer Exam – Success Pathway Course] In This Course of ,The SDH exam validates expertise in legacy synchronous digital hierarchy networks still widely used in carrier operations. Topics include STM-1/4/16/64 hierarchies, multiplexing, protection switching, synchronization, fault management, and migration to next-gen systems. Engineers must ensure service continuity, perform preventive maintenance, and resolve transmission errors.