NAICS 334210

Overview

The North American Industry Classification System (NAICS) is the production-oriented standard used by U.S. federal statistical programs to classify business establishments for economic data collection and publication. Developed under the Office of Management and Budget with Statistics Canada and Mexico’s INEGI, NAICS replaced SIC in 1997 and is currently maintained with a 2022 vintage. ¹
NAICS 334210 covers establishments primarily engaged in manufacturing wireline telephone and data communications apparatus. Examples include central office switching equipment, PBX systems, non-cellular cordless phones, answering machines, and data communications gear such as bridges, routers, and gateways. The code is used across federal economic statistics and provides scope boundaries relative to 334220 (wireless and broadcast equipment) and 334290 (other communications equipment). ²

What this NAICS covers

• Wireline telephone apparatus manufacturing (e.g., desk and wall telephones). ²
• PBX and central office switching equipment production. ²
• Non-cellular cordless telephone manufacturing. ²
• Telephone answering machine manufacturing. ²
• Data communications equipment manufacturing (bridges, routers, gateways). ²
• Board-level telephone system components/modules assembled as part of larger systems. ²

Related NAICS and PSC codes

Type	Code	Descriptor
NAICS	334220	Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
NAICS	334290	Other Communications Equipment Manufacturing
PSC	5805	Telephone and Telegraph Equipment
PSC	5815	Teletype and Facsimile Equipment

Scope notes and boundaries

• Cellular telephone manufacturing is excluded from 334210 and classified in 334220. ²
• Wired and nonwired intercom systems are excluded; these fall under 334290. ²
• Internal and external computer modems and electronic components used in telephone apparatus are classified in 33441. ²

Frequently asked questions

• What products fall under NAICS 334210?
  Telephone sets, PBX and central office switching systems, answering machines, and certain data communications equipment (bridges, routers, gateways) manufactured as wireline telephone or data communications apparatus are included. ²

• Are cellular phones covered by NAICS 334210?
  No. Manufacturing cellular telephones is classified in NAICS 334220, which covers radio, television broadcast, and wireless communications equipment. ²

• Where do intercom systems fit relative to NAICS 334210?
  Intercom systems and equipment are not in 334210; they are classified in NAICS 334290 (Other Communications Equipment Manufacturing). ²

• Do VoIP gateways and similar network devices fall within 334210?
  Yes, when manufactured as data communications equipment such as bridges, routers, and gateways associated with telephone/data apparatus, these devices are within NAICS 334210. ²

• Which PSCs commonly align to procurements for products in NAICS 334210?
  Product PSCs such as 5805 (Telephone and Telegraph Equipment) and 5815 (Teletype and Facsimile Equipment) describe what is purchased; PSC selection depends on the predominant item bought per the PSC Manual. ³

Useful resources

• Census NAICS 334210 (2022) industry description and cross-references. ²
• Census NAICS program homepage and introduction. ¹
• 2022 Economic Census — Manufacturing (NAICS 31–33) data access. ⁴

References

1. U.S. Census Bureau, North American Industry Classification System (NAICS) — Overview. https://www.census.gov/naics/
2. U.S. Census Bureau, NAICS 334210 (2022) — Telephone Apparatus Manufacturing (industry description and cross-references). https://www.census.gov/naics/?input=334210&year=2022&details=334210
3. General Services Administration, Product and Service Codes (PSC) Manual, April 2025. https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
4. U.S. Census Bureau, 2022 Economic Census — NAICS Sector 31–33 (Manufacturing) data tables. https://www.census.gov/data/tables/2022/econ/economic-census/naics-sector-31-33.html