With the power off the terminal: Plug in IP cable
Power up terminal
Press CommServer – F2
Press Top right purple key (Reports)
Press Down Arrow Top Left Purple key
Press F2 Datawire
Press F3 Key Management
Press Enter
Press Red X key back out to CommServer Credit/Debit screen
Press F3 Credit/Debit to ready screen to process Sales.
For technical assistance in setting call First Data 1-800-858-1166 option 2