I looked at FS code directly and had an improvement about the problem. Topic 1: presence can be changed and working The wiki page: http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_presence is totally wrong about the presence application, indeed when i first asked on IRC some weeks ago i get confused. On my user page, http://wiki.freeswitch.org/wiki/User:Agx, i posted some working example. I tested using X-Lite and Zoiper from my home connecting to FS behind NAT in the office. Topic 2: is this a BUG? 1. phone A register and subsribe about presence of B 2. phone B register and A get a notified that B is online (IN) 3. phone B unregister and A get notified that B is offline (OUT) 4. phone B register and A *NEVER* get notified that B is online UNTIL A register/resubscribe or A reboots is FS that remove A subscribtions when B generate a presence OUT event? is this a bug? Topic 3: presence seems stateless if is not a phone 1. phone A subscribe about presence of test@domain (not a phone) and about B@domain (a phone) 2. i change test@domain status to busy (using the presence tool) and A get notified 3. i start a call from B@domain and A get notified 4. i reboot/unregister A 5. i restart/register A then A get notified about B@domain still being on the phone but not about test@domain been busy i looked in the code and seems the PRESENCE_PROBE stuffs looks about the internal database of registrations to have test@domain been persistence across FS restart/reboot do i need to create a module myself that handle presence using a database? Thanks in advance, Antonio (AGX)