Jeremy Dies, real-time offerings manager at Lotus, said the upgrade was the result of customer feedback regarding the need to use Sametime outside the firewall.
"Sametime 2.5 added new firewall and proxy configurations to make it easier to connect with external collaborators," he said. Dies confirmed that directory and presence information are still restricted to users given authorisation by an administrator.
The upgrade also allows developers to save and store chat sessions to most database systems. An application programming interface automatically translates the Sametime chat session into the database language.