How to add g729 codec plug-in in JMF 2.1.1e

I have a g729 codec package, but I couldn't able to add it in JMF.
How can I make a JMF codec plugin, so that I can transmit audio in
g729 format.

In a straight forward way, how to enable JMF to support additional
codec plugin.

I searched through, but couldn't find any straight forward answer.

---