Keep Alive for active sip sessions using Options method
I'm looking for a way to configure my Oracle SBC to use OPTIONS Sip method in-dialog as a keep alive mecanism for active sip sessions.
Does any one know how to do this and/or to make sure the SBC will answer 200 OK (not a 481 Call does not exist) when he receives an in-dialog OPTIONS message from a peer ?
Thanks for your help.