G.651.1
| Characteristics of a 50/125 µm multimode graded index optical fibre cable for the optical access network | |
| Status | In force | 
|---|---|
| Year started | 2007 | 
| Latest version | 2.0 November 2018 | 
| Organization | ITU-T | 
| Committee | ITU-T Study Group 15 | 
| Related standards | G.652, G.657, G.8201 | 
| Domain | telecommunication | 
| License | Freely available | 
| Website | https://www.itu.int/rec/T-REC-G.651.1 | 
G.651.1 is an international standard developed by the Standardization Sector of the International Telecommunication Union (ITU-T) that specifies multi-mode optical fiber (MMF) cable.