Microsoft planned to announce a new service "Windows Mobile 6.5 devices"

On Wednesday, Microsoft planned to announce a new service that will work on Windows Mobile 6.5 devices and will let people speak into the phone to search the Internet, make phone calls and dictate text messages. The technology comes from Tellme, a company that offers hosted voice recognition services and was acquired by Microsoft in 2007.

Key to the offering is a dedicated button that launches the service on the phone, said Marcello Typrin, director of product management for Tellme. To make it really easy to use, the service should be accessible from a single point, he said. That compares to the iPhone experience, where users must navigate to the apps page and open the Google Mobile App to use a similar voice-activated search service.

Key to the offering is a dedicated button that launches the service on the phone, said Marcello Typrin, director of product management for Tellme. To make it really easy to use, the service should be accessible from a single point, he said. That compares to the iPhone experience, where users must navigate to the apps page and open the Google Mobile App to use a similar voice-activated search service.

Windows Mobile customers can already use voice commands with Live Search, but the Tellme application adds the text and voice call features and pulls all three into a single, easily accessible service.

While customers may need to push fewer buttons to launch the service, they have to push buttons more often while using the service than do their iPhone-using counterparts. With the Tellme text application, for example, users hit the button before they start speaking their message and hit it again when they're done speaking. By contrast, the Google Mobile App automatically starts listening when the user moves the phone to the ear and then stops when the user is finished speaking.

In addition, the service should get other capabilities on an ongoing basis, Typrin said. For example, in the future a user might be able to say "play Rolling Stones" to play music from the music player.