The CTS currently does not use the heatbeat function of the LDAP SDK connection factory code. This should be enabled with sensible defaults, or allow the values to be tuned with System Properties.
Note: The code in question currently exists in two places. In the DataLayerConnectionFactory and the CTSConnectionFactory. This should be resolved with a single delegate that use used by both cases.
Note from Matt: When you enable the heartbeat functionality please note that the default heartbeat interval is 10s. You may wish to decrease it.