Note 49 Operating income
€ million | 2017 | 2016 |
Revenue | 9 | 10 |
Own work capitalised | 36 | 28 |
Other income | 286 | 295 |
Total | 331 | 333 |
Revenue mainly comprises charges passed on for CDMA data communication network services. The other income chiefly relates to group-wide activities at holding company level.