[Users] How to use OpenSER as Presence Server?

Hi OpenSER users, I have downloaded openSER source(1.2.x) and installed the same. It's working fine as SIP server. I would like to use openSER source as "Presence Server". Could you please let me know how to proceed? Do i need to add any module to openser source to make it work as presence server? Thanks and Regards, Akkala Naidu Paidi A R I C E N T 5th Floor, Sigma Block, Sigma Soft Tech Park, Bangalore - 69 Mobile: +91 9886645448 Office: +91 08041069295 *********************** Aricent-Private *********************** "DISCLAIMER: This message is proprietary to Aricent and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. Aricent accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus."