Question 17/V - Electromagnetic compatibility (EMC) of telecommunications networks and equipment (New Question) CCITT should establish Recommendations on the overall subject of Electromagnetic Compatibility (EMC) to guide equipment designers and network operators on all aspects of this subject. Some separate parts will be studied under other specialized Questions in CCITT Study Group V (e.g. lightning surge disturbances, conducted and radiated radio- frequency interference). Other parts, (e.g. electrostatic discharges, mains-borne transients) will be studied only under this Question. CCITT should: 1) study emission control factors, e.g., longitudional conversion losses in telecommunications lines, screening factors, signal pulse mask characteristics. 2) examine the immunity requirements of telecommunication equipment to limit malfunction and transmission quality degradation due to external interference. The work under this Question should assist in harmonizing liaison on EMC work between CCITT, CCIR (Study Group 1), IEC and other international organizations to ensure the maximum participation of Telecommunication Administrations with the minimum overlap or duplication.