Variant of North American Industry Classification System (NAICS) 2022 Version 1.0 for Industrial production (based on the 2008 International Recommendations for Industrial Statistics)

• 1 - Industrial production
• 31-33 - Manufacturing
• 334 - 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.