Hi I'm developing one android application based on the pjsip SIP stack. And I think I have found some problems regarding the presence of the user. This first one how can I reject one request from a user? In both android and ubuntu systems I see the onIncomingSubscribe function. But it doens't return anything to the to the stack this way how can I reject a request or accept? The second one is different behavior depending if I'm in linux or Android... when in android I change the state from online to busy the other clients don't receive that notifications, but when I'm in linux if I change from online to busy I immediately receive the change in the clients that have that request. where can be the problem? best regards, João Resende