Sametime audio and video failing due to business cards

We all know that LDAP is the biggest threat to Sametime, don’t we? Are we all aware of how that impacts audio and video through business cards?

Well, a customer logged a problem yesterday after audio and video failed on their infrastructure. What made this more difficult to troubleshoot was the fact that last week and we had other problems relating to audio and video which was “taken out” after a network change the weekend prior. With last weeks problem clouding my judgement I went down the route of checking for network and synchronisation issues (last weeks problem) that I failed to look at LDAP.

It wasn’t until I spent some hours checking that last weeks problem hadn’t reared it’s head again that I looked at client side trace and saw the following exception.

CLFRB1232W: When processing the softphone configuration encountered an error: Required directory or missing required configuration information. Voice and video services are not available. Please contact the administrator.

The error in the client was:


These errors indicate that the UserInfo service isn’t providing the email address to the client’s business card. Audio and video requires the email address to function. This was detailed in a Technote which now seems to be broken

I also checked the registered bindings in the SSC and saw people connected to the SIP Proxy Registrar with audio and video working for some. Business cards were not showing the email address and in the client trace there was further signs of UserInfo problems.

User attribute search returned 0 attributes for person CN=Joe Bloggs,OU=London,O=ACME (

New DirectoryLookupThread created for [CN=Joe Bloggs,OU=London,O=ACME]
at<init>(Unknown Source)
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Calling the servlet via a web browser returned the correct results,ou=London,o=Acme&setid=1.

 <?xml version=”1.0″ encoding=”UTF-8″ ?>
– <userinfo>
– <user id=”cn=Joe Bloggs,ou=London,o=acme“>
<field name=”Name” type=”text/plain”>Joe Bloggs</field>
<field name=”Company” type=”” error=”UNAVAILABLE” />
<field name=”Title” type=”” error=”UNAVAILABLE” />
<field name=”Telephone” type=”” error=”UNAVAILABLE” />
<field name=”MailAddress” type=”text/plain”></field>
<field name=”Location” type=”” error=”UNAVAILABLE” />
<field name=”Photo” type=”” error=”UNAVAILABLE” />

This customer has problems with LDAP and changing the max and low pending variables has been tried before but it broke other Sametime components. Until a test environment is provisioned or it is agreed that I can fix forward in production not much can be done with regards to performance tuning.

Anyway, the Community server was restarted this morning and business cards worked and so did audio and video. For the time being.