I'd using incoming ESL connection, and would like to know when some user using a sip application from his cell is or isn't connected.

I thought about listening for sofia::register/unregister events to decide if he's online, but then how can I tell if his phone doesn't answer pings/shutdown?

maybe I should use sofia_presence_data?

or somehow incorporate PRESENCE_IN event?

Thanks,

Shlomi Agiv