A non-normative Appendix in Rec. ITU-T G.652 gives representative values of attenuation and chromatic dispersion, which can be taken as the basis for the design of concatenated optical fibre links in accordance with the guidelines outlined in Supplement 39 to the ITU-T G-series Recommendations. The same Appendix gives an indication of the maximum link length at various channel bit rates allowed by different values of Polarization Mode Dispersion (PMDQ).