BDT runs as a VTAM application program, requiring several VTAM definitions:

1. You must define BDT as a VTAM application program on the APPL definition statement. One APPL statement is required for each type of node your system will have, that is, one APPL statement for a file-to-file node and one APPL statement for a SNA NJE node.
2. You must define each remote node as a VTAM cross-domain resource by coding a CDRSC definition statement for each remote node.
3. You must define session parameters to VTAM by creating VTAM logon mode table entries.

VTAM definitions are discussed in Defining BDT to VTAM.