IChat error -8 with certain buddies

Question

Hello! I have had successful videochat connections at home with buddies in several locations. However, I have not been able to videochat with anyone at my university while I am at home (though these buddies can videochat with others outside the university) and, most recently, I discovered that I cannot connect to another buddy at his home. I have tried several different settings on my modem and router as suggested on these boards, but I have not been successful. Any further suggestions that can be given after I answer the questions below would be greatly appreciated!
1) Have you done the Quicktime Streaming setting ?
Yes.
2) Are you running your Mac with the Firewall On ?
If so have you set up ports for iChat ? (The ports from Apple Doc 93208)
No, the firewall is turned off.
3) Did you upgrade from Panther ?
Do any of these things effect you ? (list os known issues.)
If they did and you have done them please state so.
No.
4) How are you connected to the internet ?
a) We need to know device make and Model ?
b) We need how you have opened the ports for iChat ?
* UPnP ?
* Port Forwarding
* Port Triggering
* DMZ
c) We need to know if you know if the device is in Bridge Mode ?
(sends your Public IP through to your computer or router).
d) Do you have a router as well ?
* Is it doing DHCP ?
* Is it an Airport device ?
* Have you opened the ports there ?
* By which method ? (see above list)
I have a Siemens Speedstream 4200 DSL modem that is connected to a Linksys WRT54G router. My MacBook connects to the network wirelessly via Airport card. The modem also routes.
Yesterday, following the suggestions here http://www.ralphjohnsuk.dsl.pipex.com/page4.html#_modemroutersettings, I set the modem to router to static addressing since the modem was acting as a DHCP server along with the router. I then made the appropriate changes to my router settings by setting the internet connection type to static IP. I left the router as a DHCP server and left UPnP enabled there.
Then, I began to change the settings to the modem. Originally, NAPT was enabled along with UPnP ("Enable full Internet Gateway Device (IGD) support" was checked) and no ports forwarded. I was still able to connect to a buddy that I was previously able to connect to, but not to my "problem" buddy.
Next, I disabled NAPT and NAT with UPnP enabled, and was not able to connect to the internet. So, I again enabled NAPT, added port forwarding with the appropriate iChat ports, leaving UPnP enabled. I still couldn't connect to my buddy. Then I tried the same, but with UPnP disabled. Still cannot connect.
So, the current setup for my modem is with DHCP disabled, NAPT enabled with iChat ports forwarded, and UPnP disabled. Unfortunately, none of my other buddies are available for testing, so I don't know if I can videochat at all at this point. Router settings are still as listed above.
5) Do you have any iChat Add-Ons ?
List them if you have.
Also state if you downloaded them when you were running Panther and if you have updated them.
1. iChatUSBCam
2. iGlasses
3. Showmacster
4. ChatFX
No.
6) Does anything in this FAQ effect you and the Add-ons in addition to 5) ?
No.
7) Does it have anything to do with connecting to a PC ?
See Here and here
No.
8) List your Connection speed
http://www.adslguide.org.uk/tools/speedtest.asp
http://www.auditmypc.com/internet-speed-test.asp
http://www.dslreports.com/stest
http://www.bplspeedtest.com/broadband-speed-test.php
From speedtest.net, download is 1302 kbps, upload is 315 kbps with latency 92 ms. I check this often and this is typical.
Here are 2 recent error logs.
This is what happens when my buddy invites me:
Date/Time: 2007-06-09 14:18:02.540 -0400
OS Version: 10.4.9 (Build 8P2137)
Report Version: 4
iChat Connection Log:
AVChat started with ID 381158050.
0x18200550: State change from AVChatNoState to AVChatStateWaiting.
gkbaird6: State change from AVChatNoState to AVChatStateInvited.
0x18200550: State change from AVChatStateWaiting to AVChatStateConnecting.
gkbaird6: State change from AVChatStateInvited to AVChatStateConnecting.
0x18200550: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8
gkbaird6: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8
Video Conference Error Report:
@:0 type=4 (00000000/22)
[VCSIP_INVITEERROR]
[19]
@SIP/SIP.c:2448 type=4 (900A0015/22)
[SIPConnectIPPort failed]
Video Conference Support Report:
@SIP/Transport.c:1218 type=1 (00000000/0)
[INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP m.0:60249;branch=z9hG4bK144be3df3084b1ff
Max-Forwards: 70
To: "u0" <sip:[email protected]>
From: "gkbaird6" <sip:[email protected]>;tag=384998908
Call-ID: c0320e5a-16b5-11dc-8671-a12f0a5f13c4@lip
CSeq: 1 INVITE
Contact: <sip:[email protected]:60249>;isfocus
User-Agent: Viceroy 1.2
Content-Type: application/sdp
Content-Length: 501
v=0
o=gkb 0 0 IN IP4 m.0
s=gkbaird6
c=IN IP4 m.0
b=AS:2147483647
t=0 0
a=hwi:1028:2:2000
a=bandwidthDetection:YES
a=iChatEncryption:NO
m=audio 60253 RTP/AVP 12 3 0
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpID:224882993
m=video 60251 RTP/AVP 126 34
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 1 rules 30:352:288
a=framerate:20
a=RTCP:AUDIO 60254 VIDEO 60252
a=pogo
a=fmtp:126 imagesize 0 rules 20:640:480:640:480
a=rtpID:377888549
@SIP/Transport.c:1218 type=1 (00000000/0)
[INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP m.0:60249;branch=z9hG4bK144be3df3084b1ff
Max-Forwards: 70
To: "u0" <sip:[email protected]>
From: "gkbaird6" <sip:[email protected]>;tag=384998908
Call-ID: c0320e5a-16b5-11dc-8671-a12f0a5f13c4@lip
CSeq: 1 INVITE
Contact: <sip:[email protected]:60249>;isfocus
User-Agent: Viceroy 1.2
Content-Type: application/sdp
Content-Length: 501
v=0
o=gkb 0 0 IN IP4 m.0
s=gkbaird6
c=IN IP4 m.0
b=AS:2147483647
t=0 0
a=hwi:1028:2:2000
a=bandwidthDetection:YES
a=iChatEncryption:NO
m=audio 60253 RTP/AVP 12 3 0
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpID:224882993
m=video 60251 RTP/AVP 126 34
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 1 rules 30:352:288
a=framerate:20
a=RTCP:AUDIO 60254 VIDEO 60252
a=pogo
a=fmtp:126 imagesize 0 rules 20:640:480:640:480
a=rtpID:377888549
@SIP/Transport.c:1218 type=1 (00000000/0)
[INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP m.0:60249;branch=z9hG4bK144be3df3084b1ff
Max-Forwards: 70
To: "u0" <sip:[email protected]>
From: "gkbaird6" <sip:[email protected]>;tag=384998908
Call-ID: c0320e5a-16b5-11dc-8671-a12f0a5f13c4@lip
CSeq: 1 INVITE
Contact: <sip:[email protected]:60249>;isfocus
User-Agent: Viceroy 1.2
Content-Type: application/sdp
Content-Length: 501
v=0
o=gkb 0 0 IN IP4 m.0
s=gkbaird6
c=IN IP4 m.0
b=AS:2147483647
t=0 0
a=hwi:1028:2:2000
a=bandwidthDetection:YES
a=iChatEncryption:NO
m=audio 60253 RTP/AVP 12 3 0
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpID:224882993
m=video 60251 RTP/AVP 126 34
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 1 rules 30:352:288
a=framerate:20
a=RTCP:AUDIO 60254 VIDEO 60252
a=pogo
a=fmtp:126 imagesize 0 rules 20:640:480:640:480
a=rtpID:377888549
@:0 type=2 (00000000/22)
[VCVIDEO_OUTGOINGATTEMPT]
[4]
Video Conference User Report:
I can see that the wrong ports are being used.
Here is the error log generated when I invite my buddy:
Date/Time: 2007-06-09 13:56:02.474 -0400
OS Version: 10.4.9 (Build 8P2137)
Report Version: 4
iChat Connection Log:
AVChat started with ID 1020800682.
gkbaird5: State change from AVChatNoState to AVChatStateWaiting.
0x18200570: State change from AVChatNoState to AVChatStateInvited.
0x18200570: State change from AVChatStateInvited to AVChatStateConnecting.
gkbaird5: State change from AVChatStateWaiting to AVChatStateConnecting.
gkbaird5: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8
0x18200570: State change from AVChatStateConnecting to AVChatStateEnded.
Chat ended with error -8
Video Conference Error Report:
Video Conference Support Report:
Video Conference User Report:
From what I understand, this means the ports are blocked, right?
I hope this is enough (but not too much!) information. Thanks in advance to anyone who can offer some help!
Gina
MacBook 13" Mac OS X (10.4.9) 2GHz Intel Core 2 Duo
MacBook 13"   Mac OS X (10.4.9)   2GHz Intel Core 2 Duo

Answer 1

The Modem to Router is Static.
i.e. DHCP in the Modem is Off and the Router is set
to Static on the WAN side (Or the bit at the top of
the Linksys Set Up page)
The Subnet mask Agrees ?
The Gateway IP is the Modem's IP ?
Yes, all the numbers are correct.
You have tried the ports in the Modem to be UPnP with
and without NAT and NAPT.
You have tried Port Forwarding to the IP the router
has.
IS there an setting for SPI, QOS or DOS on this
device?
Can it be adjusted ?
It may be that only some Buddies can send data in
large enough/fast enough amounts to cause you a
problem.
There are not any settings for these in the modem setup that I can find, but as you say, it is overcomplicated!
So on to the Linksys.
As already said in the Set up page it is Static back
to the Modem. (with the proviso questions of Subnet
Mask and Gateway IP).
This is doing UPnP.
The Port Forward
page on this device says to Unblock Anonymous
Internet Pings.
It also shows in the Gaming and Applications it has
it's own QOS and it would be worth checking that this
is also Off (I don't think this one is adjustable.
I already unblocked anonymous requests and QOS has been off.
There is a chance that if the SpeedStream can only do
this with NAPT/NAT Enabled then the Certain Buddy
problem may still pop up
http://www.ralphjohnsuk.dsl.pipex.com/page15.html#_Cer
tain_Buddy
In this case you may have to see if your Buddies are
using NAT as it maybe the type of NAT that is being
done (There are about 6 main ways and sometimes
devices can get a little fussy).
My problem buddy is, um, sharing an unsecured wireless connection, so I have no idea how the LAN is setup on his end.
At this stage it is a little odd to say why the ports
have moved if I have understood your set up
correctly.
Yes, that's what I thought. I was hoping that someone else would see an obvious problem with my setup, but alas, that is not the case! Would there be any advantage to setting my modem to bridge mode (setup has a button: set to bridge mode), and if so, how would I configure the router from there?
Thanks!
Gina