The following code illustrates some of the definition statements that are used in the NCP to establish a switched subarea link connection.

GN112SW  GROUP ACTIVTO=480,        ACTIVITY TIMEOUT
               DIAL=YES,           SWITCHED CONNECTION
               LNCTL=SDLC,         SDLC LINK CONTROL
               PUTYPE=4,           PU TYPE 4 (NCP)
               ⋮
               BRKCON=NOWNER       BREAK CONNECTION = NO OWNER (ANS)
*
N112L001 LINE  ADDR=008,           LINK ADDRESS
               SPEED=9600,         LINK SPEED
               CLOCKNG=EXT,        EXTERNAL CLOCKING
               SDLCST=(PRIM,SEC),  SDLCST PRIMARY/SECONDARY
               ⋮
               ISTATUS=ACTIVE      INITIAL VTAM STATUS
*
N112P001 PU    PUTYPE=4,           PU TYPE 4 STATION ADDRESS
               ⋮
               ISTATUS=ACTIVE      INITIAL VTAM STATUS

These switched connections are established using automatic dial and answer. Either subarea can initiate or terminate the switched connection using a VTAM® operator command. Use the VARY DIAL operator command to establish a switched connection. The operator at either VTAM subarea can terminate the switched connection using the VARY HANGUP or VARY INACT operator commands.