EC1SC16 EC1SC17 EC1SM-24.576M EC1SM-25.000M EC1SMA-10-25.00M EC1SMB-12.000M EC1SMC-12.000MTR/E1SFA18-12.000MTR EC1SMC-T-24.576MTR EC1SMD2340CWC EC1SMF-14-13.500M