NTO logical units

IMS allows start-stop devices such as TTY and TTY-compatible devices (for example, the 3101) to attach to IMS through VTAM®.

The Network Terminal Option (NTO) Program Product handles the device characteristics associated with line control and communication protocols, and translates them into SNA-SLU 1 communication protocols handled by VTAM and IMS. The operational characteristics of each device do not change, but session initiation and termination are modified as described below.