UCM , Error connecting to LDAP server ldap ?

Hi to all,

Today checking the logs from one of our UCM 10g  servers, I found  several errors of ldap connections from yesterday, searching in the web I found  that this was may be caused by network latency and it has his origin in the java delay time  exception set to gloval variable TIME_LIMIT_EXCEEDED  of the class LDAPException.  

Is this true or it maybe caused by other cause  (The exception is below)?

<code>

  !$Error connecting to LDAP server ldap://10.50.11.5:389. Make sure LDAP server is running on specified port and hostname. 

   Error returned is: netscape.ldap.LDAPException: Time to complete operation exceeded (85);