Mino – The UC Guy

Microsoft Unified Communications Blog

Archive for the ‘Phone Edition’ Category

Call unsuccessful – The Requested type of content encryption is not supported

Posted by Mino on November 17, 2008

You might get the above error message when you try to call your voice mail hosted on Exchange 2007 SP1 UM from your Office Communicator Phone Edition (OCPE) powered device. The likely cause of the issue is a mismatch between the VoIPSecurity setting of your SIP URI UM dial plan and the Security – Encryption level setting on the A/V Conferencing properties on your OCS 2007 pool.

The OCPE device use the Security – Encryption level setting to determine, if media should be encrypted or not. The default setting is Require encryption and OCPE will then send media using SRTP. If the UM dial plan VoIPSecurity parameter is set to SIPSecured Exchange 2007 SP1 UM will not accept the SRTP based media and you get the error message above on OCPE. Changing your UM dial plan to have the VoIPSecurity parameter set to Secured will fix the issue. This is the recommended setting, since this ensures that media is sent in a secure way.

Posted in Common Errors, OCS & Exchange07, Phone Edition | Tagged: , , , , , , , , | Leave a Comment »

Microsoft Unified Communications endpoints

Posted by Mino on October 12, 2008

I have been testing some Nortel UC endpoints in my office and they are doing great , i already got them beside our CIsco 7940 IP Phone and let me say that i stoped using the Cisco and enjoying my LG-Nortel color phone .

Those Endpoints either are standalone IP endpoints with Communicator built in or as USB handsets that are driven by Office Communicator on the desktop.

IP Phones

1- The LG-Nortel IP Phone 8540 is an intelligent IP Phone that helps improve productivity and work performance for information workers

2- The LG-Nortel USB Phone is designed to deliver a high-quality user experience.

3- The NEC UC USB Phone is a USB device that can be plugged directly into a PC USB port, enabling high-quality wideband sound

4- The Polycom CX200 Desktop Phone helps to enable hands-free calls with remarkable wideband voice quality from a PC.

5- The Polycom CX700 IP Phone is a standalone IP phone with remarkable wideband voice quality and large touch-screen color display.

6- The ViTELiX VX-200 helps turn a PC into a multifunctional, high-quality telephone extension.

7- The ViTELiX VX-100 helps turn a PC into a multifunctional, high-quality telephone extension.

8- The ViTELiX VX-200 Duo helps turn a PC into a multifunctional, high-quality telephone extension and has an additional standard telephone socket at the rear.

9- The Jabra GN9330 USB Headset is among the first wireless office headsets to offer true wideband audio

10- The LG-Nortel Bluetooth Headset is a wireless solution helping users to make or receive calls on their PCs without speakerphones

11- The Polycom CX100 Speakerphone helps to enable hands-free calls with remarkable wideband voice quality from a PC

Posted in Phone Edition | Tagged: , , , , | 1 Comment »

Uploading of a .cab file to Update Server WSS site fails with an HttpException and the message Request timed out

Posted by Mino on October 12, 2008

Sometimes, when you upload a new .cab file for Microsoft Office Communicator 2007 Phone Edition or Microsoft RoundTable using the OCS 2007 Software Update Service Management Console Upload Software feature, the upload fails with an HttpException and the message Request timed out in the event log. The actual exception might vary, but the real reason is typically lack of resources on the WSS server. The resources lacking might be memory or CPU or a combination of both. You typically get the exception because the upload of the .cab times out. If you run into this try to add resources, i.e. more memory or more CPU capacity. If that is not possible here are a couple of tips you can use to increase the various time-outs.

On the server running the OCS 2007 Software Update Service Management Console you can edit the web.config file found in C:\Program Files\Microsoft Office Communications Server 2007\Web Components\UC Device Updates\Management Console. The web.config file controls the .NET requests the Management Console is using to talk to the WSS server. The web.config is per default read protected, so you have to make it writeable before editing it. In the file is a XML section called httpRuntime. This is the section you can tune. HttpRuntime is described here http://msdn2.microsoft.com/en-us/library/e1f13641(VS.71).aspx. In my test environment I’m using the following settings <httpRuntime maxRequestLength=”900000″ executionTimeout=”300″ appRequestQueueLimit=”30″/>. This mean that the client will time-out after 300 seconds or 5 minutes.

Now you have changed the client time-out, but you typically also need to change the server side time-out on the WSS server. This is done by tuning the IIS time-out setting. The default is 120 seconds, but you can increase that by using the instructions in http://support.microsoft.com/default.aspx/kb/925083. On my test system I use 300 seconds. After changing the time-out stop and restart the web site hosting WSS.

Update 21-JAN-08: The above tuning is not the complete fix. The code itself is using other timeouts. We are investigating this and will report back.

Update 28-FEB-08: Please install the build released today  http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=889c542e-8b09-46c2-bd86-671c21668830. It should fix the issue with .cab upload error

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How to install a Public Root CA certificate on Office Communicator 2007 Phone Edition

Posted by Mino on October 7, 2008

What can you do if the Public Certificate you are using on your Edge server(s) is not trusted by Office Communicator 2007 Phone edition? The public certificate is not trusted because its corresponding Root CA certificate is not installed on the device per default. Here I describe how to make Root CA certificates available on the device.

You can use the certutil mechanism to install the Public Root CA certificate. First you download the certificate from the CA’s web site. Then you use the certutil command to publish the certificate to your Active Directory. It will be added as an object under CN=Certification Authorities, CN=Public Key Services, CN=Services, CN=Configuration, DC=<domain>, DC=<tld>. You can add multiple Root CA certificates using this method. The device will download all the certificates found.

After the public Root CA certificate is published you will have to connect the device once to the internal network to get the certificate downloaded. Before you do that you need to reset the device to clear the certificate store, since you need the device to ask for certificates (if you didn’t do this the device would use the currently installed certificate when challenged by your internal OCS servers and not search for them in Active Directory). You reset the device by inserting a paper clip in the small hole on the back between the USB and headset connectors. Afterwards you can connect the device to the Internet and it will connect to the Edge server.

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Microsoft Office Communicator 2007 Phone Edition – July edition

Posted by Mino on October 7, 2008

Microsoft  has released a new update for Office Communicator 2007 Phone Edition powered devices – http://support.microsoft.com/?kbid=952693.

The image version is now 1.0.522.101

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