Lync 2010 OBR Changes in June Update

I recently posted about Lync 2010 call failures post CU4. This behavior has been changed in CU6/June to avoid service provider variances while still providing faster recovery/discovery of failed gateways for 911 emergency calls. See below:

For those that experienced issues after the CU4 update the June update should over come this issue without any other changes.


PowerPoint Viewing with Lync for iPad Version1.5 is here!

With Lync 2010 June cumulative updates it introduces a new Lync for iPad feature for viewing PowerPoint. It does require that your infrastructure have the June updates installed for Lync Server 2010 as well as the new Lync for iPad version 1.5 installed. The new iPad client is also compatible with earlier updates but you wont get the new PPT view feature until you apply the June updates to Lync Server.

For more information see here.



Update: Controlling File Transfer from the Lync Edge with MSPL Combined with June Updates

I have written about the ability to control file transfer from the Lync Edge for federated users using MSPL but with the CU 6 update there are some new features. So in addition to being able to select the domains you want to block there is now the ability to block file transfers altogether, URL’s and specific files over the Lync Edge.

  • To block URL style links:

    New-CsImFilterconfiguration -Identity EdgePoolIdentity -BlockFileExtension $True -Action Block -Enabled $True


  • To block the transfer of files with common extensions:

    New-CsFileTransferFilterConfiguration -Identity EdgePoolIdentity -BlockFileExtension $True -Action Block -Enabled $True


  • To block the transfer of all files:

    New-CsFileTransferFilterConfiguration -Identity EdgePoolIdentity -BlockFileExtension $True -Action BlockAll -Enabled $True

This is a great enhancement to controlling the Lync Edge.


Lync Cumulative update for June: Online Meeting Join for Non-Federated Lync 2010 Users Fix

Just wanted to highlight a specific fix in CU6 that I have run across with a few deployments. Previous versions had an issue when two companies with Lync deployed but not federated tried to join each others online meetings.

Cumulative update package for Lync 2010: June 2012

A user cannot join a Lync Online meeting that is created in another organization by using Lync 2010

Download CU6


Device Review: SNOM 821 UC Edition

The SNOM 821 is packed full of interesting features that would make the adamant PBX legacy old school person think twice about what Microsoft has to offer with its device partners. Overall I was impressed with what SNOM have achieved with the latest pre-release build of the SNOM UC Edition firmware. SNOM’s UC Edition is developed by SNOM. This enable SNOM to bring different features to the forefront to set it self apart from the Lync Phone Edition firmware which is produced by Microsoft.

What I really like is that SNOM has managed to do some interesting stuff and keep the price at around $200 bucks or less. In this review I will try to hit on some of the features I thought were a little different.


Figure 1: The physical design is pretty large but they have managed a good layout of keys and features.


Figure 2: Feature keys.

Above is the feature key layout. Take note of the DND feature key because below is the effects of do not disturb. Its pretty obvious that your in DND mode as well as the ability to update your presence in Lync. My Lync presence is reflected with the red M&M in the background of the much larger DND symbol.


Figure 3: DND mode after pressing the feature key.

The MWI light is like a lighthouse. Its big and bright and can’t be missed. Although this is a pretty standard feature I haven't seen a phone scream this loud it has a voice mail. The light on the top hand corner will light on missed calls as well but the message light down lower in the phone will only light with a voicemail message.


Figure 4: MWI lights.

If you haven't noticed already but midway down the phone LCD are two lit keys. This is unique to the SNOM phones that you can set presence watchers for people in your buddy list. Here I am watching Ben and Roger. While I am not about to really care what Ben and Rogers presence is all the time this is especially handy for admins and managers. The presence states have three colors which are red(busy), Orange (away) and green (available). I guess you could say its speed dial on presence steroids Smile


Figure 5: Roger and Ben’s presence assigned to Function Keys.

The presence function keys are really easy to setup straight from the phone interface. No need to hit the web interface. Below is a photo of setting up presence on the function keys. What I  also like about this feature is that when the Fkeys are pressed it opens the contact card so I can access all their contact details to call.


Figure 6: Setting up the function keys for presence.

Figure 7 has a couple of cool points. The most obvious is the call stats including the codec in use. This is simply accessed by pressing the message key mid call. This is really cool but not unique per say as other vendors also do this but I thought I would still call it out. The second thing is the messages listed below it. It has a missed call message I haven't accessed yet which is also why the MWI is still lit.


Figure 7: Call stats and messages.

The last thing I will mention is the ability to change status from the phone. This is also available in the Aries devices now but I like the way its presented in the SNOM device.


Figure 8: Updating presence from the phone.

As it stands today the one feature I feel is missing is calendar integration on the phone interface and the join meeting experience. I am sure though that this is something SNOM is looking into (I have no roadmap details this is just a guess). Like I said this is currently pre-RTM and I did see improvements between the pre-release software I tried. Even without calendar integration this is still a great take on an integrated Lync compatible IP phone.

Overall though I think SNOM have done a great job addressing features that I have heard customers mention they would like to see in a device. I am looking forward to what they come out with next.

Comments welcomed.


VoIPNorm’s Lync 2010 Cisco Interoperability Post Collection

As most of you know I post pretty regularly around issues concerning Lync 2010 and Cisco. In fact, it is the most common interoperability scenario I come across by far. Well I decided to put together all my posts in one document. Not sure if anyone will download it but I want to do something a little different. Its in a Q & A format.

I have posted it here on my SkyDrive:!1277

Let me know what you think if you download it.


Lync 2010 Gateway Timeout Call Failures Post CU4 Deployment

I come across this issue sometime ago. I just wanted to get down the particulars so it was easy to find. Hopefully this might help someone else running into this issue.

As the KB article below describes a 10 second timer began working for the OutBoundRouting Component to allow faster recovery from gateway failures. This was implemented during the CU4 update process. The Mediation Server is expecting a Session Progression message before the 10 second timer expires.;EN-US;2565378

“This article describes an update that adds 10-second timers to Microsoft Lync Server 2010 Outbound Routing (OBR) components. The timers are used to improve efficiency when the OBR components route Public Switched Telephone Network (PSTN) calls. The timers start when the OBR components send INVITE requests to PSTN calls. If the OBR components do not receive a PSTN gateway response within 10 seconds, the OBR components route the calls to other PSTN gateways.”

For most partner gateways this requirement is not an issue and most will return a session progression message regardless of the actual state of the call in progress. Whereas other qualified gateways (in my case it was a Cisco ISR) will only send a progression message back after the PSTN carrier or PBX has acknowledged call progression. In the case of International calls, calls to cell phones etc, carrier acknowledgement can be more than 10 seconds. This does cause call failures in cases where the 10 second timer expires.


You can change the 10 sec timer. The file which has the configurable parameters is 'OutboundRouting.exe.config”. Normally it is not supported to change the values in this file and unless your experiencing issues this value should not be altered . The file can be found on the front end server:

C:\Program Files\Microsoft\Lync Server 2010\Server\Core

Change this line:

<add key="FailOverTimeout" value="10000"/>

10000 represents 10 seconds. Most deployments should be happy with a value of 15-20 seconds. See Example below for 15 seconds:



      <add key="FailOverTimeout" value="15000"/>

      <add key="MinGwWaitingTime" value="1"/>

      <add key="MaxGwWaitingTime" value="20"/>

      <add key="FailuresForGatewayDown" value="10"/>

      <add key="FailuresForGatewayLessPreferred" value="25"/>

      <!-- Valid values are between 5 and 600 -->

      <add key="HealthMonitoringInterval" value="300"/>

      <!-- Valid values are between 60 and 3600 -->

      <add key="GatewayStateReportingInterval" value="1800" />



You will need to restart the front end service after the change for the new value to take effect.

This is a work around. Future CU updates may in fact change this value back or alter this value, so its something to be aware of when performance maintenance upgrades.