Pass few days,I had installed the Openfire-3.4.1 successfuly .We use spark -2.5.8 as client.
We can use all functions such as text chat?file transport except voice chat.
1,We can use voice chat only one time,when I ended this call and place another voice call,it has flow information:
Session closed due to Unable to negotiate session.This may be caused by firewall configruation problems.
and the other side:voice chat ended:closed remotely
When I logout ,and login again,I could use voice chat for one time agai.
2,We cann’t use voice chat through VPN yet at any time.
All firelwalls are closed.
Thank for advice and technical support.