You can view a video on configuring the TA 6XX device for both voice and data here: [video] Configuring voice and data on a Total Access 600
To do ALL data, you will map all 24 channels of the T1, rather than 12 channels to the FXS ports and 12 channels to the internal router (as the TA 600R does not have FXS ports).
We also have a PDF on how to configure the TA 600R for a Full T1 data, which can be found here: Configuring an ADTRAN Total Access 6xx Series for a full T1 data P2P connection
This PDF goes over configuring the physical T1 interface as well as mapping, selecting the L2 protocol, and router configuration.
Hope this helps,