NBC Universal and Internet search leader Google announced Monday they agreed on a deal that would allow Google to sell advertisements on some of NBC's cable channels such as MSNBC, Oxygen and the Sci Fi network.

The partnership will help Google to sell ads in other places than besides next to its search engine, and will offer NBC access to advertisers who currently advertise online through Google, but don’t place any ads on TV.

The deal, whose terms were not disclosed, marks the first time that Google will broker ads sold through a network.

Google’s ambitions to expand beyond Web advertising are known, but its 2-year-old TV Ads service has not gained too much popularity.

“This raises its profile and gives it a lot more credibility," said Greg Sterling, an analyst with Sterling Market Intelligence, according to the Los Angeles Times. “Other media companies will take notice of this.”

The relationship between Google and NBC was not a friendly one until recently, as NBC last year complained about its TV shows appearing on the Google-owned YouTube website without permission.

Several media companies and television executives have not shown interest in working with Google, which dominates the online advertising market. But if the deal with NBC Universal proves successful, more investors might want to work with Mountain View, Calif.-based Google.

The deal, which will go into effect in the upcoming months, covers advertising inventory on Sci Fi, Oxygen, MSNBC, CNBC, Sleuth, and Chiller, with more NBC Universal channels possible in the future, the two companies said in a statement.

“Advertisers using the Google TV Ads platform can reach NBCU Cable's national audience and gain access to viewership data at an unprecedented scale,” the NBC Universal and Google statement read.