JSF AJAX through PhaseListener

Can someone point to a reference article or blog which shows the PhaseListener approach of enhancing a JSF component for AJAX.A simple example on the way it is implemented will suffice
[198 byte] By [rana30a] at [2007-11-26 18:31:55]
# 1
https://blueprints.dev.java.net/bpcatalog/ee5/ajax/phaselistener.html
martin_dubuca at 2007-7-9 6:06:02 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...