iChat Video Conference Error

i got an error message on video conference and couldn't establish the connection.

what's the cuase with this?

error message;

Date/Time:      2006-07-12 08:55:41.900 -0400
OS Version:     10.4.7 (Build 8J135)
Report Version: 4

iChat Connection Log:
AVChat started with ID xxx.
0x69f8920: State change from AVChatNoState to AVChatStateWaiting.
xxx: State change from AVChatNoState to AVChatStateInvited.
0x69f8920: State change from AVChatStateWaiting to AVChatStateConnecting.
xxx: State change from AVChatStateInvited to AVChatStateConnecting.
0x69f8920: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8
xxx: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8


Video Conference Error Report:
4.015129 @:0 type=4 (00000000/22)
[VC_SIP_INVITE_ERROR]
[19]
4.015027 @SIP/SIP.c:2437 type=4 (900A0015/22)
[SIPConnectIPPort failed]
[]
2.010169 @SIP/SIP.c:2437 type=4 (900A0015/22)
[SIPConnectIPPort failed]
[]
Hiroyuki TamuraField EngineerAsked:
Who is Participating?
 
slyongConnect With a Mentor Commented:
10.4.7 updated iChat to V3, if I am not wrong.  If you problem is the same as describe in http://homepage.mac.com/loren_ryter/ichat/Site/iChat_problems.html.  You have to solve it with some configuration of the router as described in http://www.ralphjohnsuk.dsl.pipex.com/page4.html
0
 
Hiroyuki TamuraField EngineerAuthor Commented:
thank you, slyong:)
0
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