[OpenSIPS-Users] how to bild "pidf" for network elements

[skumar453 at gmail.com]

Hi all

I am developing presence network agent(PNA)..IT collects the presence  
information from the core network elements like Serving-call session  
control function(scscf)..and home subscriber server(HSS). and it will  
construct the publish message and send it to the Presence server(PS).

here my doubt is what should be the content in the publish message for  
network presence?

can any one suggest how to do it ? and can anyone let me know, whether  
there are any RFC or Specification for constructing PUBLISH message for  
network elements?

thank you in advance
suresh
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