I don't believe it exits from google. Here's many options:
Mobile applications
* MGTalk - third-party Java application that includes Gmail notifications.
* Talkonaut - another third-party Java application. Distinctive features: call your contacts (not free), easy way to add contacts from other IM networks.
* OctroTalk - Windows Mobile client for smartphones and Pocket PCs. It supports chatting and talking with other Google Talk users.
* Google Talk for BlackBerry. You can "add, delete and rename contacts, know when [your] friends are online and available, leave conversations and resume them later, copy conversation text into memory and even be notified when a message is being typed."
http://www.jagong.com/
http://code.google.com/p/mobile-google-talk-http/
http://jgmail.sourceforge.net/
http://www.reporo.com/register.jsp..
Raketu ! Multiformat instant messenger including Gtalk, Sms and email sending, Voip from computer or mobile phone
http://www.sqij.com
Palringo
http://www.pocketpcfreeware.mobi/download-pigeon.html
http://www.talkonaut.com/