Objects

When a client connection request is made, Telnet must assign an LU name to represent the client. Optionally, a USS table, default application, unique parameters defined in the PARMSGROUP statement, or network monitoring can be assigned to the connection. See Mapping Objects to Client Identifiers for details about how these objects are mapped to clients. The complete list of objects follows:

TN3270 or TN3270E terminal application name – The DEFAULTAPPL mapping statement maps the TN3270 or TN3270E terminal application Object to a terminal client. When a TN3270 or TN3270E connection is negotiated, Telnet immediately initiates a session request to the VTAM® application.
TN3270E printer application name – The PRTDEFAULTAPPL mapping statement maps the TN3270E printer application Object to a printer client. When a TN3270E printer connection is negotiated, Telnet immediately initiates a session request to the VTAM application.
Line Mode application name – The LINEMODEAPPL mapping statement maps the linemode application Object to a client. When a linemode connection is negotiated, Telnet will immediately initiate a session request to the VTAM application.
USS table name – The USSTCP mapping statement maps the USS table Object to a client. When a TN3270 or a TN3270E connection is negotiated, Telnet will send a USSMSG10 screen to the client. A special case condition exists when an application name and a USS table are both mapped to the client by the exact same Client Identifier. In this case, Telnet will immediately initiate a session request to the VTAM application and use the USS table for error messages.
Interpret table name – The INTERPTCP mapping statement maps the Interpret table Object to a client. When a TN3270 or a TN3270E connection is negotiated, Telnet uses the Interpret table to modify USS commands. The client must have a USS table mapped to it for the Interpret table to be used.
Terminal LU, local LU group (LUGROUP), or shared LU group (SLUGROUP) (Generic) - The Generic LUMAP mapping statement maps a single LU, LUGROUP, or SLUGROUP Object to a client.
- For single LU mappings, Telnet assigns the LU name to the connection if the LU is available.
- For LUGROUP mappings, Telnet assigns an available LU from the group to the connection.
- For SLUGROUP mappings, Telnet requests that the LUNS allocate an available LU from the group and then assigns it to the connection.
An LU is required to represent the client when a VTAM session is initiated. DEFAULTLUS is a default local terminal LUGROUP Object mapped Generically to the NULL Client Identifier. SDEFAULTLUS is a default shared terminal SLUGROUP Object mapped Generically to the NULL Client Identifier.
Terminal LU, LUGROUP, or SLUGROUP (Specific) - The Specific LUMAP mapping statement maps a single LU, LUGROUP, or SLUGROUP Object to a client.
Unlike the Generic mapping in which Telnet assigns the LU, the Specific mapping requires the client to specify the LU name that it wants. Telnet verifies that the LU is mapped and available. The specified LU name can be either a mapped single LU, an LU within a mapped LUGROUP or SLUGROUP, or the group name of the mapped LUGROUP or SLUGROUP.
- If the client specifies an LU name within a SLUGROUP, Telnet requests the LUNS to verify that the LU is available and allocate the LU to this Telnet.
- If the client specifies an LUGROUP name, Telnet assigns an available LU from within the group.
- If the client specifies an SLUGROUP name, Telnet requests the LUNS to allocate an available LU from the group and then assigns the LU.
DEFAULTLUSSPEC is a default local terminal LUGROUP Object mapped Specifically to the NULL Client Identifier. SDEFAULTLUSSPEC is a default shared terminal SLUGROUP Object mapped Specifically to the NULL Client Identifier.
Printer LU, local printer group (PRTGROUP), or shared printer group (SPRTGROUP) (Generic) - The Generic PRTMAP mapping statement maps a single LU, PRTGROUP, or SPRTGROUP Object to a client.
- For single LU mappings, Telnet assigns the LU name to the connection if the LU is available.
- For PRTGROUP mappings, Telnet assigns an available LU from the group to the connection.
- For SPRTGROUP mappings, Telnet requests the LUNS to allocate an available LU from the group and then assigns it to the connection.
An LU is required to represent the client when a VTAM session is initiated. DEFAULTPRT is a default local printer PRTGROUP Object mapped Generically to the NULL Client Identifier. SDEFAULTPRT is a default shared printer SPRTGROUP Object mapped Generically to the NULL Client Identifier.
Printer LU, PRTGROUP, or SPRTGROUP (Specific) - The Specific PRTMAP mapping statement maps a single LU, PRTGROUP, or SPRTGROUP Object to a client.
Unlike the Generic mapping in which Telnet assigns the LU, the Specific mapping requires the client to specify the LU name that it wants. Telnet verifies that the LU is mapped and available. The specified LU name can be either a mapped single LU, an LU within a mapped PRTGROUP or SPRTGROUP, or the group name of the mapped PRTGROUP or SPRTGROUP.
- If the client specifies an LU name within a SPRTGROUP, Telnet requests that the LUNS verify that the LU is available and allocate the LU to this Telnet.
- If the client specifies a PRTGROUP name, Telnet assigns an available LU from within the group.
- If the client specifies a SPRTGROUP name, Telnet requests that the LUNS allocate an available LU from the group and then assigns the LU.
DEFAULTPRTSPEC is a default local printer PRTGROUP Object mapped Specifically to the NULL Client Identifier. SDEFAULTPRTSPEC is a default shared printer SPRTGROUP Object mapped Specifically to the NULL Client Identifier.
Telnet PARMSGROUP – The PARMSMAP mapping statement maps the PARMSGROUP Object to a client. The parameters in the group override parameter values specified in either TELNETGLOBALS or TELNETPARMS.
Telnet MONITORGROUP – The MONITORMAP mapping statement maps the MONITORGROUP Object to a client. The parameters in the group define what monitoring measurements will be done for a mapped client. For details, see Connection monitoring mapping statement.

Rule: All LUGROUPs and all PRTGROUPs, whether local or shared, that are used on a given profile must have unique names.

The two following statements are not Objects but can affect application and LU Object usage:

ALLOWAPPL – This statement allows client access to applications and optionally maps or confirms the mapping of an LU name to the client based on the application name chosen. DEFAULTAPPL application names are presumed allowed and do not require the ALLOWAPPL statement for Telnet acceptance. However, ALLOWAPPL may be used by default applications for LU assignment and other advanced functions.
RESTRICTAPPL – This statement restricts Telnet acceptance of application names to only users that specify an acceptable User ID and password. It also optionally maps or confirms the mapping of an LU name to the client based on the application name and User ID chosen.