Figure 1 depicts session flows for an ILU-initiated session. LUC is in session with APPLA, which issues CLSDST PASS to pass the SLU(LUC) to a new PLU(APPLB). The numbers correspond to the descriptions after the figure.

1. VTAM® passes the PLU alias name as known in NETA. The alias selection function has the option of returning the real name of the PLU, the network ID of the PLU, and the name of the SSCP that owns the PLU. The exit routine can also return the logon mode name as known in the SLU's real network.
2. The exit returned the logon mode name.
3. Same description as number 1.
4. VTAM passes the DLU alias name, the OLU real name, the associated LU real names, and the logon mode and COS names as known in NETC. The alias function has the option of returning the DLU real name, the network ID of the DLU real name, the name of the SSCP that owns the DLU, the OLU and associated LU alias names as known in the DLU network, and the logon mode and COS names as known in the DLU network.
5. Same description as number 4.
6. SSCPB assumes the DLU network ID is NETB and finds that it owns the PLU. VTAM requests translations from NETC to NETB for the OLU alias name, the associated LU alias names, the logon mode name, and the COS name.
7. VTAM drives the session management exit routine to translate the OLU alias name, the associated LU alias names, the logon mode name, and the COS name from NETC to NETB.