Tag Archives: federation

Push Notification Fails with a 504 Server Time Out

While troubleshooting push notification failure issues with a client, I found an interesting problem.  The client had already configured the SRV record as required (http://blog.ucmadeeasy.com/), and disabled the URL filtering as required (http://support.microsoft.com/kb/2664650), but push notification was still failing with … Continue reading

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A Few Words on Federation

Recently, while creating some documentation for an install it struck me that federation may be a bit confusing if you aren’t working with Lync on a daily basis.  With that in mind I’m writing this article in hopes of clearing … Continue reading

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A Case of the 504s, Revisited

Recently I was working with someone from the technet forums to test their open federation. I added the contact to my list and sent them a message and immediately received the dreaded 504 error in MOC. Since this has been a hot topic on the forums and I see lots of searches landing people here for 504 errors I wanted to share again. I began the troubleshooting process by starting a new debug session on my edge server to grab a SIP trace (see my previous article on the same subject here for more information).

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One way messages with federated partner and ID 504 in Communicator

Since the blog I did on Live Meeting troubleshooting I have seen a lot of queries leading people to the site for troubleshooting OCS. I’ve also seen a ton of questions on the subject on the MS forums. All this has lead me to the conclusion that OCS troubleshooting isn’t that easy to get a handle on. With that in mind I’m writing this post on troubleshooting federation. First and foremost, this article is about troubleshooting a mistake I made during a deployment recently, and if you ask any PSS engineer they will tell you 80% of the problems they face with OCS are based on the same thing: human error/configuration error. As I said in my last troubleshooting post, I’m no expert on troubleshooting OCS, but hopefully this post will help someone out there. As always I encourage you to share your stories and methods if you think they may help someone else.
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