Video Problem: A & B connect, B & C connect BUT C & A can NOT connect

While trying to debug the connection between A & C we discovered that A and C can both make video connections to B but not with each other. What might cause this problem? A & B are both MacBook Pros C is an old 12' iBook. While we like to do 3 ways and have in the past with these three locations, now we're simply trying to re-establish two way video links and find that A & C are unable to connect. The connection fails with error -7.

As far as I know, Zyxel DSL modem has a NAT. You can check some online forum post to see how to turn off the NAT.
At the same time, you can post some logs here by start iChat in terminal using the following command:
/Applications/iChat.app/Contents/MacOS/iChat -errorLogLevel 7
and look for something similar to the following and paste it here.
104056.932752 CommNAT result:
External IP: 67.117.156.19
External Ports: 16403, 16403, 16403
CNAT_BADTEST ....... 0
CNAT_ISFULLCONE .... 1
CNAT_ISPAT ......... 0
CNAT_ISPATHOST ..... 0
CNAT_TRYPRESERVE ... 1
CNAT_PATINORDER .... 0
CNAT_BLOCKIP ....... 0
CNAT_BLOCKPORT ..... 0
CNAT_LOOPBACK ...... 1

Similar Messages

  • I do not know why, but I can not go to the App Store! before I went there without any problems but now I can not connect with App Store

    I do not know why, but I can not go to the App Store! before I went there without any problems but now I can not connect with App Store

    Open the Finder. From the Finder menu bar click Finder > Go > Go to Folder
    Type or copy/paste:   ~/Library/Cookies
    Click Go then move the com.apple.appstore.plist file from the Cookies folder to the Trash.
    Try the App Store.

  • TS1702 Hello, we have a Mac and an ipad,the Mac is working and wifi is on and the Ipad's wifi is on too, but Ipad Safari can not open because it could not connect to the server, does any one know what have happened?

    Hello, we have a Mac and an ipad, the Mac is working and wifi is on and the ipad's wifi is on too, but Ipad Safari can not open the page because it could not connect to the server, does any one know that?

    Some things to try first:
    1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
    2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
    3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
    4. Go into your router security settings and change from WEP to WPA with AES.
    5.  Renew IP Address: (especially if you are drooping internet connection)
        •    Launch Settings app
        •    Tap on Wi-Fi
        •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
        •    In the window that opens, tap on the Renew Lease button
    6. Potential Quick Fixes When Your iPad Won’t Connect to Your Wifi Network
    http://ipadinsight.com/ipad-tips-tricks/potential-quick-fixes-when-your-ipad-won t-connect-to-your-wifi-network/
    ~~~~~~~~~~~~~~~~~~~~~~~~~
    Fix WiFi Issue for iOS 7
    http://ipadnerds.com/fix-wifi-issue-ios-7/
    iOS 6 Wifi Problems/Fixes
    Wi-Fi Fix for iOS 6
    https://discussions.apple.com/thread/4823738?tstart=240
    How To: Workaround iPad Wi-Fi Issues
    http://www.theipadfan.com/workaround-ipad-wifi-issues/
    Another Fix For iOS 6 WiFi Problems
    http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
    Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
    Fix For iOS 6 WiFi Problems?
    http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
    Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
    http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
    How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
    http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
    iOS 6 iPad 3 wi-fi "connection fix" for netgear router
    http://www.youtube.com/watch?v=XsWS4ha-dn0
    Apple's iOS 6 Wi-Fi problems
    http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
    ~~~~~~~~~~~~~~~~~~~~~~~
    iPad: Issues connecting to Wi-Fi networks
    http://support.apple.com/kb/ts3304
    How to Boost Your Wi-Fi Signal
    http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.h tm
    Troubleshooting a Weak Wi-Fi Signal
    http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Sig nal.htm
    How to Fix a Poor Wi-Fi Signal on Your iPad
    http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
    iOS Troubleshooting Wi-Fi networks and connections  http://support.apple.com/kb/TS1398
    iPad: Issues connecting to Wi-Fi networks  http://support.apple.com/kb/ts3304
    WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
    How to Fix: My iPad Won't Connect to WiFi
    http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
    iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
    iOS: Recommended settings for Wi-Fi routers and access points  http://support.apple.com/kb/HT4199
    How to Quickly Fix iPad 3 Wi-Fi Reception Problems
    http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
    iPad Wi-Fi Problems: Comprehensive List of Fixes
    http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
    Connect iPad to Wi-Fi (with troubleshooting info)
    http://thehowto.wikidot.com/wifi-connect-ipad
    10 Ways to Boost Your Wireless Signal
    http://www.pcmag.com/article2/0,2817,2372811,00.asp
    Fix iPad Wifi Connection and Signal Issues  http://www.youtube.com/watch?v=uwWtIG5jUxE
    Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
    How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
    Unable to Connect After iOS Update - saw this solution on another post.
    https://discussions.apple.com/thread/4010130
    Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
    Some Wi-Fi losses may stem from a problematic interaction between Wi-Fi and cellular data connections. Numerous users have found that turning off Cellular Data in Settings gets their Wi-Fi working again.
    You may have many apps open which can possibly cause the slowdown and possibly the loss of wifi. In iOS 4-6 double tap your Home button & at the bottom of the screen you will see the icons of all open apps. Close those you are not using by pressing on an icon until all icons wiggle - then tap the minus sign. For iOS 7 users, there’s an easy way to see which apps are open in order to close them. By double-tapping the home button on your iPhone or iPad, the new multitasking feature in iOS 7 shows full page previews of all your open apps. Simply scroll horizontally to see all your apps, and close the apps with a simple flick towards the top of the screen.
    Wi-Fi or Bluetooth settings grayed out or dim
    http://support.apple.com/kb/TS1559
    ~~~~~~~~~~~~~~~
    If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
     Cheers, Tom

  • HT4356 I have a cannon mg3120 air printer and it is connected to my wifi but my iPad can not find a printer, what can I do

    I have a cannon mg3120 air printer and it is connected to my wifi but my iPad can not find a printer, what can I do

    1. Reboot iPad
    2. Reboot router

  • TS1814 I have purchased iPhone 3g device from my friend, I connected it to the iTunes to upgrade from 3.1 to 6.0 as many softwares were not being installed as iOS was not up to date. I upgraded but now I can not activate my device. What I should do now???

    I have purchased iPhone 3g device from my friend, I connected it to the iTunes to upgrade from 3.1 to 6.0 as many softwares were not being installed as iOS was not up to date. I upgraded but now I can not activate my device. What I should do now??? i am really feeling difficulty because i have been disconnected from the network.
    I am from Pakistan.

    The 3G cannot be updated to iOS6, it can only go to iOS 4.2.1.
    Activation issues are generally the result of the device being hacked or jailbroken.

  • I have a problem with the sync between iTunes and ipad2. I can not see the files in iPad. Help me please.

    I have a problem with the sync between iTunes and ipad2. I can not see the files in iPad. Help me please.

    Cannot see what files ? Music (synced music should appear in the iPod app), films/TV shows (Videos app), documents ... ?

  • Unable to sync my movies in the i tunes 11 library i try to add the mp4 video by using the add to library option but the movie does not sync while the music is syncing fine...

    i am unable to sync my movies in the i tunes 11 library i try to add the mp4 video by using the add to library option but the movie does not sync while the music is syncing fine...

    I had the same issue. What I did was save the movies on a thrid-party app like Download Manager Lite. Once downloaded, go back to itunes, go to your iDevice, go to apps and transfer the app, then scroll down and click on the app and from there you can send the movies to that app and WILL play. Can only hold up to 8 videos/movies (this is for iPod Touch 3G or better, iPhone 3s or better, iPad requires iOS 4.3 or better)
    YES THIS APP SUPPORTS .mp4
    From other ipod (nano, classic): I don't remember.
    If your just putting them on iTunes, it should show and play on iTunes no problem.
    Message was edited by: keeferaf

  • Hi, I can not delete files Film / video from the desktop it wants my password I write but Ando I can not float to Trash

    Hi, I can not delete files Film / video from the desktop it wants my password I write but Ando I can not float to Trash

    This topic has a fix for that problem: Desktop to Trash Problem: "Finder wants...: Apple Support Communities
    OT

  • HT4623 my iphone 4 i already up date new software ios 7.  but now i can not open my phone.. please let me know what is the problem ?

    my iphone 4 i already up date new software ios 7.  but now i can not open my phone.. please let me know what is the problem ?

    sir, i dawonlodding the new software ios 7,that time my phone henged then now i can`t open it.pls let me know whats problem?

  • Intermittent video problem on Adobe Connect Pro

    Hi,
    I have this intermittent video problem on the Adobe Connect pro server. The video connent sometime display blank even though it showed playing in the status bar and I can hear the audio part of it. Do someone have similar problem as mine?
    Thanks

    I've had to "cache" uploaded videos by playing them shortly before the audience will see them. For me, the cache holding time when using Adobe's servers is about 5 minutes.

  • I have an iPhone 4 upgraded to ios5.  I purchased a VGA cable to connect to my LCD but the LCD can not see the iPhone

    Aloha e
    My LCD can not see my VGA cable when connected to my iPhone 4 that has been upgraded.  Thoughts please?

    As of now apple has stopped this. We can all give a feedback for this to apple so that after getting a huge amount of feedback about this they may rethink once to implement it back.

  • When I try to play youtube video I get the message of blocked plug-in, and I can not play video using Safari. (Youtube works fine with google chrome) I tried installing flash player HTML5 etc... but still no difference.

    I just installed OSX Mountian Lion, and ever since then I can not play youtube video's. I get the message of 'Blocked Plug-in' in the youtube screen. I have tried installing Adobe Flash Player. HTML 5, also tried enabling/disabling java, but nothing worked out. Is there any way I can play youtbe vieos on Safar. (It works fine with Google Chrmoe, only safari has problem)

    If you have the ClickToFlash extension installed, that can prevent Flash based video from streaming. Safari > Preferences > Extensions
    It can also be installed as a plugin in /Library/Internet-Plug-Ins.
    Try uninstalling the currently installled Flash plugin (required for most YouTube content) then reinstall new >  Troubleshoot Flash Player | Mac OS
    From your Safari menu bar top of your screen click Safari > Preferences then select the Advanced tab.
    Select:  Show Develop menu in menu bar
    Now from the menu bar click Develop > Empty Caches

  • I have never had a problem syncing music to my ipod, but now I can not get it to sync anything.  HELP!

    Any help would be appreciated.  I can not figure out how to get my new music to sync to my ipod touch.  Never had this problem before?

    YES Terence!  Thank you. Exporting allowed me to move my photos from iPhoto into the Burn Folder on my desktop.   But that doesn't explain why I'm having to go that route now.   Have I done something (accidentally changed some setting) on my computer that will not allow me to just click and drag anymore?   I really liked the convenience of the click and drag option. 
    I don't have the time tonight to export and burn a lot of CD/DVDs.  I'll try that tomorrow and make sure my photos are moving properly.  I also need to export photos to my external hard drive to make sure that route is working. 
    Wouldn't you know that my Apple Care Plan runs out this Wednesday?!  I need to make sure everything is working properly before that expires. 
    Thank you so much for your help.   I really, really appreciate it.

  • I have problem with my iCloud account, restore my ipad and I can not log in please help

    hello, I can not restore my ipad and enter, get a message that my password is already einvalida and nose to do

    We are not Apple employees. You should not post your email address in a public forum and I have asked the moderators to remove it from your post.
    Do not buy anything with the new Apple ID or it will always be tied to that Apple ID. Try to get the problems with the original Apple ID resolved with help from Apple. If you have been locked out of your account try here for help.
    https://ssl.apple.com/emea/support/itunes/contact.html

  • TS3899 Upgrade to ios6 got the following problems in my ipad2 . Very low download speed. Can not open my apple mail in my iPad.

    Upgrade to iOS 6 encountered the following problems in my ipad2.
    (1) very low download speed
    (2) I can not open my apple gmail in my iPad.
    (3) I can't download new apps from Internet.

    Have tried your suggestion of toggling but unfortunately that has not solved the problem - but many thanks for the suggestion.
    Regards
    Sailorfrank

  • Flash Video problem on Adobe Connect 9

    Hi Folks
    having an issue I am hoping to get some light shed on - I am downloading content from an Adobe Connect 8 server and uploading to Adobe Connect 9 server in a seperate domain.  All has been working fine except for Flash Videos - anytime I upload a flash video (FLV) format and attemt to access it eitehr directly on the server or remotly get a grey screen.  Is there any particular add ons required to enable flash video to work with Adobe Connect 9 , using Flash 10, OS is Windows 2008 R2
    thanks in advance
    Paul C

    Nope. Looks good though and glad you got it sorted.
    --Nancy O.
    Alt-Web Design & Publishing
    www.alt-web.com
    "Nancy - Adobe Comm. Expert" <[email protected]> wrote
    in message
    news:f6efg8$mqv$[email protected]..
    > Okay .. my problem turned out to be a mimetype that
    needed to be added on
    > the server at CrystalTech. They added it and now my
    Flash Video works. I
    > have added Flash video to many CrystalTech accounts in
    the past and this
    has
    > never happened. I am not sure why it wasn't already on
    this account as
    this
    > was a premium account .. I guess I should have gotten
    the cheap one. :)
    >
    > Have others had this problem with their hosts? I wasted
    a couple of hours
    > thinking the problem was me and it was not.
    >
    > Nnacy
    >
    >

Maybe you are looking for