Technology Codes Used in Form 477 Fixed Broadband Deployment Data
Below is a list of 2-digit technology codes used in the FCC Form 477 data and their associated technologies. The technologies indicate the portion of the Internet access connection that terminates at the end user's location (premises).
Download the Broadband Deployment Data from Form 477
| Code | Technology of Transmission |
| 10 | Asymmetric xDSL |
| 11 | ADSL2, ADSL2+ |
| 12 | VDSL |
| 20 | Symmetric xDSL* |
| 30 | Other Copper Wireline (all copper-wire based technologies other than xDSL; Ethernet over copper and T-1 are examples) |
| 40 | Cable Modem other than DOCSIS 1, 1.1, 2.0, 3.0, or 3.1 |
| 41 | Cable Modem – DOCSIS 1, 1.1 or 2.0 |
| 42 | Cable Modem – DOCSIS 3.0 |
| 43 | Cable Modem – DOCSIS 3.1 |
| 50 | Optical Carrier / Fiber to the end user (Fiber to the home or business end user, does not include “fiber to the curb”) |
| 60 | Satellite |
| 70 | Terrestrial Fixed Wireless |
| 90 | Electric Power Line |
| 0 | All Other |
*Symmetric xDSL is a set of technologies distinct from Asymmetric xDSL technologies. Symmetric xDSL services are designed to operate only with equal downstream and upstream information transfer rate. They are not typically marketed to residential end users.
If different technologies could be used in the two directions of information transfer (downstream and upstream), filers were directed to report the technology code for the downstream portion of the connection.