Mino – The UC Guy

Microsoft Unified Communications Blog

Posts Tagged ‘Office Communicator Phone Edition’

Tanjay (LG-Nortel) “Cannot download certificate because domain is not accessible. If the problem persists, contact your system administrator”

Posted by Mino on February 20, 2009

I had this problem with the Tanjay new phone when I plugged it to my DHCP network and i was not able to find the problem .

However after little trials i found the below solution.

 Normally there is two ways to logon to Active Directory:

1.       Domain\username

2.        username@domain.local

 

I was getting this certificate error because I was trying username@domain.local  however I have found that if you log into the phone using domain.local\username

 

The phone is able to find the domain and download the certificate.

 

I found this out while doing a packet trace on the phone one day and found this search behavior

 

Netbios AD name: test

UPN Suffix: test.local

DNS Suffix: abc.com – this is given to the phone via DHCP

 So the DNS queries from the phone was this

 

Away from all these complicated trace like stuff, if you want to solve this problem just login with domain.local\username   and it will work fine  J

Posted in Certificates, Phone Edition | Tagged: , , , , , | 6 Comments »

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 »