To promote the 3G network it is currently rolling out, BSNL is launching a massive advertising campaign using the nation's train system.
The extensive campaign, involving splashing BSNL-branded advertising all over Rajdhani Trains, is expected to reach 15 million pairs of eyeballs in 34 locations across 11 states, India Infolinesaid.
Radjhani trains traverse through all of India's state capitals.
Up to 25,000 square feet of advertising will be used on one train, including a full external vinyl wrap. Another train will be rebadged shortly.
There are also around 350 panels, 200 table tops and 400 brochure holders inside a single train.
The external advertising on each train is expected to reach 85,000 people per day, while the internal ads will be seen by around 1,500 passengers per day.
BSNL will pay for upkeep, cleaning and upgrades on its branded trains, and will also fill the train with audio jingles, announcements, contests and the ability to activate 3G services onboard.