Has anyone tried using ooh323 in Asterisk to talk H.323 to an Avaya S8500 running Communications Manager 4 software? I have a potential customer who has such a system, and wants an Asterisk box to talk to it. Apparently they don't have SIP installed. I've successfully got ooh323 talking between two Asterisk boxes, so am just after some confidence regarding the Avaya, or any gotchas to be aware of. Cheers Tony -- Tony Mountifield Work: tony at softins.co.uk - http://www.softins.co.uk Play: tony at mountifield.org - http://tony.mountifield.org