PDH & SDH Ericsson data https://www.mediafire.com/file/57j9g3ojybfy3ux/1+-+PDH+and+SDH.pdf/file?fbclid=IwAR3fRHv2UTD356B_mOsSdrCm4N6lnCVsN9bLwATmLdrxkH1cFweq-f-Htqo
Adaptive Modulation & Spectral Efficiency Classes Ericsson data https://www.mediafire.com/file/cuxgbi5yqkz7b3l/5-+Adaptive+Modulation+&+Spectral+Efficiency+Classes.pdf/file?fbclid=IwAR0QCqXFBpFV3vuo6sJVr45Un5w5UKqiJXWvVcwPw6ZeYa_fMLdhmOhZoDI