Ok, this is a big deal. The next version of Asterisk supports GoogleTalk!
From the Press Release:
Asterisk 1.4 is the first major release of Asterisk since the release of Asterisk 1.2 in November 2005. With over 20 new functionality additions including IPFAX compatibility, unified messaging capabilities and Jabber/Jingle/GoogleTalk protocol compatibilities, Asterisk 1.4 features overall quality and performance improvements, as well as increased scalability and interoperability.