Microsoft officially closed its acquisition of Tellme Networks today.

Tellme, based in Mountain View, Calif., uses voice recognition software to make searching for information faster on mobile or fixed-line phones.

Microsoft announced the Tellme acquisition on March 14. Now, Tellme is a wholly owned subsidiary and will continue to operate out of Mountain View.

Microsoft said today the teams are well into a rapid planning phase and expect to compete a strategy for connecting and integrating Tellme's industry expertise with Microsoft's platforms, resources and global reach.

Tellme will work under the Microsoft Business Division, run by President Jeff Raikes. Tellme CEO Mike McCue is remaining as the senior leader and is working closely with Zig Serafin, general manager of Microsoft's Unified Communications Group.

Also, today, Microsoft announced it would buy mobile advertising company ScreenTonic of Paris for an undisclosed sum.