Come across to Global IP Sound developer that enable Google Talk voice.

Background:

Global IP Sound (www.globalipsound.com) develops embedded voice processing technologies for VoIP networks. GIPS enables high voice quality and fidelity in end-to-end IP communications with robustness against packet loss. Global IP Sound’s deliver complete voice solutions to applications developers, gateway and chip manufacturers. Companies using GIPS products include Nortel Networks, Skype, WebEx, Yahoo!, AOL, EarthLink and other key players in the VoIP market.

The GIPS developer community (http://developer.globalipsound.com):

The goal of the GIPS Community is to easily allow developers to utilize Global IP Sound’s technology to develop exciting VoIP applications and innovative ways of communicating. 

By making its software available to anyone, GIPS is helping to break down boundaries and encourage innovation and expression