I'm not able to select the T.120 option within the services profiles on my 3515 MCU. The services are not SCCP enabled (SCCP isn't enabled on the MCU either) so I'm not sure what the problem is. Any suggestion is appreciated.
The Join Data Conference button on the MCU conference control page allows users to join T.120 data conferences from the computer running the conference control. This button is currently not available in version 5.0 and will be re-added in a later patch.