Tata Indicom has debuted a "push to talk" service that uses Qualcomm's BREW software and handsets provided by Kyocera (CNetAsia)

Push-to-talk technology allows callers to connect to other cell phones with just the push of a single button, similar to a walkie-talkie. Only one person can talk at a time, and there is no need to dial a number.

Update: Hutchison Essar, a division of telecommunications giant Orange, has announced their "push to talk" cell phone service too.