Device stat for account on remote PBX


Maybe someone could share some light on this …

We have an asterisk box connected to a SIP-trunk provider.
Can we, from our asterisk box, ask the SIP-provider of the state of a SIP account on his side (also asterisk)?

Is it possible to have something like this:
exten = 6003,hint,SIP/


I don’t believe Asterisk supports remote presence over SIP. I would be very surprised if an ITSP supported it.