ITU-T Rec. D.307 R (11/1988) REMUNERATION OF DIGITAL SYSTEMS AND CHANNELS USED IN TELECOMMUNICATION RELATIONS BETWEEN THE COUNTRIES OF EUROPE ...
ANNEX A
Results of the cost study on international digital systems and channels
A.1 Transmission facilities (filinefl part) (see Table A-1/D.307 R)
A.2 Switching (see Table A-2/D.307 R)