SQL backend and File Store pitfalls

I just returned from a job that first failed monumentally, but that I was able to recover from through some hard research. Better share it for others to avoid.

Lync Server 2013 and Address Book Server issue

Today I was bugged Down with a problem on a migration job from 2010 to 2013. After prep, topology design and deployment of the new 2013 pool – with no specific warnings of what was to come – I ran into this issue with the Address Book Server.

Lync Conference 2013 in retrospect

I just got home from the Conference, and apart from the 20 hour travel each way it has been nothing but a joyride! So, with a few hours to digest the experience I thought I would put down some words giving my take on the conference. Of course, all the big news have been blogged and tweeted heavily, so I wouldn’t expect any big surprises if I were you!

Networking. That is the number one key takeaway for me. Getting to meet MCM’s, MVP’s, Microsoft architects and so on, discussing topics with them. Invaluable. Thanks to all the great and competent people that invested their time there, you will be the biggest argument for my participation next year.

The Lync Room Systems. This was the big news in the conference, and man are those Things going to set a standard in the Meeting room. I am not going to do a technical review here, only give huge credit to Microsoft and partners that have done a great job at defining the end user experience when it comes to Meetings and Meeting room systems, and how to address the pain points we see in todays solutions.

The Lync 2013 Mobile Clients. Those are going to be great devices, with real good quality and a similar user experience across platforms. I am glad that Microsoft has honored the market by adding presentation capabilities (view) on the iPad, and not only the RT or full W8 tablets. A couple of things to bear in mind though:
– the client will not support handover between different networks (e.g. WiFi <-> 3G/4G). I did get to discuss it a bit with Brian Stucker after a session, and like he pointed out mobile users are somewhat used to have their calls drop out once in a while. And once signed in again on another network, you just hit conversation history and resume your call! Besides, would you rather have the conversation drop or just put on hold (like for instance Jabber does) and have the other end go “hello? hello?”.
– PSTN calls on the mobile Client will use G.711. That will put some more strain on your WiFi deployment.
– The only supported publishing, and signalling path, will have internal mobile Clients generate some hairpinning on your WAN connection as clients will register and signal through the Reverse Proxy. Media will flow P2P though.

New Enterprise Voice features. Thanks to Doug Lawty for his insight on both new and exisiting features, such as
– when applying the new inter-trunk feature of Lync Server 2013, don’t consider the number series that reside on an IP-PBX as a property of Lync, i.e. don’t set up an Unassigned Number range that would includes that of the IP-PBX. That would mess up routing. Also, when applying PSTN Usages to the inter-trunk – don’t automatically assume that the IP-PBX admin has taken the necessary steps regarding Class of Service etc.
– for Voice Routes, if you assign more than one gateway Lync will not prioritize in which order they are Applied. While this is good for load balancing it is not for least cost routing. Doug’s tip was to assign PSTN Usages in a preferred order, where one can have alternative routes/gateways further down the line.
– Location Based Routing is one of the new features soon to be released. This will mainly be a feature to comply with local legislation, where PSTN Calls will be forced to go through the local PSTN Gateway, preventing toll-bypass where this is prohibited by law.

High Availability and Disaster Recovery. Subbu Chandrasekaran did a good job demonstrating and describing the mechanisms in Lync Server 2013, and how they are easily controlled through PowerShell cmdlets. And now I even feel confident in the exact requirement for number of Front End servers in a HA pool as well; where Microsoft recommends a minimum of three, you CAN actually go with two according to http://technet.microsoft.com/en-us/library/gg412996.aspx (this has been heavily disputed among my colleagues)

I could of course mention a lot of other things, small tips and “a-ha’s” one get, but these are key to me anyway. For readers that are fluent in Norwegian (or know their way around translation Tools), also check out my colleagues and my own key takeaway bullets on http://lyncatea.no coming up shortly!

Can’t wait till next LyncConf!

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Lync Server 2013 one-way federation with Lync Online

After completing a Lync Server 2013 install I got some feedback that federation with Office 365/Lync Online users wasn’t working properly. On the other hand, federation with other Lync-enabled organisations was ok. Some of the symptoms, that I also verified using my own Lync Online account, were:

• On-premise users could see Lync Online users’ presence, and initiate IM
• Lync Online users could NOT see on-premise users’ presence, NOR could they initiate IM (message would time out with error message)
•  Once IM was initiated from on-premise user to Online user, all modalities would work (although presence would take some time to update)

Lync Server 2013 and Enterprise Voice issues

Had a “funny” problem the other day, where a customer who I installed Lync Server 2013 for was struggling. They were experiencing that incoming calls would appear twice (two toasts) whenever simultaneous ring or Call-forwarding was enabled. Normal outbound calls to the same forwarded number was working. I set up a test account myself, but for me the Call would just terminate if sim-ring or Call-forwarding was enabled. Since my Lync running the test account was on a Virtual machine with no sound Device, I was not sure whether I could trust the results.

The new Centralized Logging Service

In December 2012 I did my first customer install of Lync Server 2013. Up until then I had only toyed around a little with a lab install of the Preview / Evaluation software, and had not really gotten familiar with the new type of logging tool that comes with Lync Server 2013.

UAG as a Lync Reverse Proxy

​In a recent Lync project I needed to advice my customer on what reverse proxy to apply. On 12th of September Microsoft announced the end-of-life for my previous favourite, the Forefront TM​G. This was a well documented, proven and stable platform for both Lync as well as other web  applications/services needing to be published safely in the outer perimeter.