IBM AS/400E Setting Up for Telnet Printer Pass-Through Mode

Youcan specify either of these generic device types more completely by requesting

the AS/400 Host Print Transform(HPT) function and selecting the speciﬁc

manufacturing type. AS/400 sends the printer data stream inASCII.

Setting Up for Telnet Printer Pass-Through Mode

Youcan use the CFGTCPTELN command to set up your TPPT mode session.

The server job for a TCP/IP application must be started in the QSYSWRK

subsystem. The Start TCP/IP Server (STRTCPSVR) command starts the servers

that are shipped with the TCP/IP Utilities licensed program.

Even though the Change TelnetAttributes (CHGTELNA) command has an

AUTOSTARTparameter, that parameter is overridden or ignored by the

STRTCPSVR command.

Virtual devices are used by the server system to direct output to devices on your

system. AS/400 Telnetserver support automatically selects (and creates, if

necessary) these devices for you. Youmay also choose to create your own virtual

device under the QVIRCDnnnn virtual controller.

The option is available for you to allow the Telnetserver support on the AS/400

system to automatically conﬁgure virtual controllers and devices. The QAUTOVRT

system value speciﬁes the maximum number of devices that are automatically

conﬁgured by the system. Use the Change System Value (CHGSYSVAL)command

to change the value of the QAUTOVRT system value. For example, entering the

following command string changes the number of virtual devices that can be

allocated on a system to 50:

CHGSYSVAL SYSVAL(QAUTOVRT) VALUE(50)

Note: QAUTOVRT has been modiﬁed for Version4 Release 2 to support numeric

values of 0 through 32500, and a special value of *NOMAX.

Todetermine and set the maximum number of users you want signed on to the

AS/400 system at any time, do the following:

1. Set the QAUTOVRT value to 32500, the maximum value allowed, or use the

*NOMAX value.

2. Let your users use pass-through, Telnet,the virtual terminal application program

interface and TelnetPrinter pass-through until you decide that the number of

virtual devices created is sufficient for normal system operation.

3. Change the QAUTOVRT value from 32500 to the number of virtual devices you

require for normal system operation.

If you have never allowed automatic conﬁguration of virtual devices on your system,

the QAUTOVRT value is 0.A Telnet connection attempt with a dependence on

automatic creation of the virtual device then fails because the Telnetserver does

not create more than the speciﬁed QAUTOVRT devices (zero). If you try to connect,

you will receive a message (TCP2504) that indicates that the Telnetclient session

has ended and the connection is closed. In addition, the QTGTELNETS job in the

Chapter6. TelnetServer 217