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Troubleshooting Direct Push (Windows Mobile and Microsoft Exchange Server)

By Mauricio Freitas, in , posted: 25-Apr-2006 10:23

If you are an IT administrator you could probably be facing an interesting task at the moment: deploying Microsoft Exchange Server SP2 and making the new Messaging and Security Feature Pack (MSFP) work with Windows Mobile devices, including security and Direct Push e-mail to Pocket PC Phone Edition and Smartphones.

We have quite a collection of articles about this topic here on Geekzone, including configuration tips for Windows Mobile AUTD (the original version deployed with Windows Mobile 2003), an overview of Windows Mobile MSFP, and an end-user view of Windows Mobile Direct Push and other features introduced with AKU2.

If you want more detailed troubleshooting steps for Windows Mobile MSFP, I suggest you check this blog entry Direct push is just a heartbeat away.

Exchange 2003 introduced the Always Up To Date notification feature (AUTD) that kept devices up to date by sending SMS triggers to the device. The triggers were sent from the enterprise as SMTP messages to the SMTP front end at the mobile operator. They were then sent through the SMS gateway as SMS messages to the device. This approach had some limitations since not all mobile operators did the SMTP to SMS conversion. Even when they did, there was latency involved with SMS messages and there were end-to-end reliability issues. Also some mobile operators charged for each incoming SMS message so that added an extra dimension to the cost of staying up to date. To alleviate these issues, Exchange 2003 SP2 introduced Direct Push.

Direct Push is a client initiated HTTP connection to the server where the device opens a connection to the Exchange Server and keeps it alive for a duration known as the heartbeat interval.  Basically the client sets up the connection, chooses the appropriate heartbeat interval and tears down and reestablishes the connection if and when necessary. The server sends notifications about new items over this connection and the client synchronizes to get the new items.


The blog post contains useful information about server configuration, device configuration, log analysis and more. Worth a read if you are an IT administrator planning or running a Microsoft Exchange Server installation.



Other related posts:
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Windows Phone 8 Portico update: at last here in New Zealand
Windows Phone updates, again






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Mauricio Freitas
Wellington
New Zealand


I live in New Zealand and my interests include mobile devices, good books, movies and food of course! 

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