AT&T Inc. is launching a video-sharing service for its wireless customers, a step toward offering converged services of wireless, video and Internet technology, the company said on Tuesday.

The service, called AT&T Video Share, will enable users to send live, one-way video feeds during phone conversations, the top U.S. phone company announced at the NXTcomm communications conference in Chicago.

Users can, for example, talk to a friend or a spouse while sending live video of something they are considering buying or an event they are attending.

The service is now available on AT&T's 3G wireless service in Atlanta, Dallas and San Antonio, and will be expanded in late July throughout its next-generation network, the company said.

AT&T said this is another step toward combining communications tools. It will eventually offer video-sharing technology on various devices.

While AT&T has recently begun offering bundles of video, phone and Internet, such combinations have mostly been about sending customers a single bill rather than making the different services work together.

Ultimately, services such as Video Share will be accessible over any of the three primary screens that customers use most frequently: the wireless device, the PC and the television, the company said in a statement.

Video Share will cost $4.99 a month for 25 minutes of video share use, or $9.99 a month for 60 minutes, AT&T said. A pay as you go option will be priced at 35 cents a minute.