Variant of NAICS 2017 Version 3.0 - Information and communication technology (ICT) sector

• ICT/TIC - Information and communication technology industries
• 31-33i - ICT - Manufacturing
• 334i - ICT - Computer and electronic product manufacturing
• 3342 - Communications equipment manufacturing

33421 - Telephone apparatus manufacturing

This industry comprises establishments primarily engaged in manufacturing wired telephone and data communications equipment. These products may be stand-alone or board-level components of a larger system.