This Recommendation deals with designing ISDN equipment.
It gives information about:
–           types of
induced voltages (longitudinal voltage, transverse voltage) and their effects
(malfunction, reduction of transmission quality);
–           sources of
induced voltages (radio frequency transmitter, power line, electrified railway
line, lightning, ESD, ignition engine);
–           electrical
characteristics of induced voltages (e.g., wave shape, amplitude, frequency);
–           equipment
performance categories (e.g., reduced performance, loss of function).