PAI is defined @ <a href="http://www.ietf.org/rfc/rfc3325.txt">http://www.ietf.org/rfc/rfc3325.txt</a><br><br>For what they are trying to do Sonus suggested P-Charge-Info (which I think it is still in the draft stage) --> <a href="http://www.ietf.org/internet-drafts/draft-york-sipping-p-charge-info-06.txt">http://www.ietf.org/internet-drafts/draft-york-sipping-p-charge-info-06.txt</a><br>
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