I can''t speak each other with the ''phone'' tools

when I try to speek to my frend ,I click the button:voice,but it cant work ,the log reported like this:

Error trying to connect to remote server: skst.im.server(DNS lookup: skst.im.server:5269)

java.net.SocketTimeoutException: connect timed out

at java.net.PlainSocketImpl.socketConnect(Native Method)

at java.net.PlainSocketImpl.doConnect(Unknown Source)

at java.net.PlainSocketImpl.connectToAddress(Unknown Source)

at java.net.PlainSocketImpl.connect(Unknown Source)

at java.net.SocksSocketImpl.connect(Unknown Source)

at java.net.Socket.connect(Unknown Source)

at org.jivesoftware.openfire.session.OutgoingServerSession.createOutgoingSession(O utgoingServerSession.java:253)

at org.jivesoftware.openfire.session.OutgoingServerSession.authenticateDomain(Outg oingServerSession.java:142)

at org.jivesoftware.openfire.server.OutgoingSessionPromise$PacketsProcessor.sendPa cket(OutgoingSessionPromise.java:199)

at org.jivesoftware.openfire.server.OutgoingSessionPromise$PacketsProcessor.run(Ou tgoingSessionPromise.java:184)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

what can I do to fix the error?

Message was edited by: asgardoo