Troubleshooting emulation types
When developing a Telnet client, it is important that you negotiate the correct emulation workstation type. The functions allowed vary with the workstation type. The following guide helps you understand the workstation type and the function capabilities of that workstation.
Workstation type negotiations and mappings
The Workstation and printer mappings table shows a list of virtual display stations that the server uses to match the physical display stations of the client system.
If you are not sure what emulation package you are running, you need to determine what your virtual display device is. You can use the Work with Job (WRKJOB) command to find out what it is. The job name is displayed at the top. This is the name of the virtual display device associated with your job. By default, the naming convention is QPADEVxxxx, where xxxx are alphanumeric characters.
To determine the device type, type:
WRKCFGSTS *DEV QPADEVxxxx
You can work with your device description. Type an 8 (Work with description) next to the name of the device. The system displays the device type. You can then determine from the device type whether you are running in full-screen mode for 3270, 5250, VT100, or VT220.
| Supported workstation and (model) | Equivalent type and (model) | Internet specification | Description |
|---|---|---|---|
| 5251 (11) | IBM-5251-11 | 24 X 80 monochrome display | |
| 5291 (1) | 5291 (2) | IBM-5291-1 | 24 X 80 monochrome display |
| 5292 (2) | IBM-5292-2 | 24 X 80 color graphics display; this workstation type is also emulated by a graphic workstation function. | |
| 3196 (A1) | 3196 (A1) 3196(B1) 3196 (B2) 3476 (EA) | IBM-3196-A1 | 24 X 80 monochrome display; this workstation type is also emulated by a monochrome workstation function. |
| 3486 (BA) | IBM-3486-BA | 24 X 80 monochrome display | |
| 3487(HA) 2 | 3487 (HG) 2 3487 (HW) 2 | IBM-3487-HA | 24 X 80 monochrome display; this workstation type is also emulated by a monochrome workstation function. |
| 3487 (HC) 2 | IBM-3487-HC | 24 X 80 color display; this workstation type is also emulated by a color workstation function. | |
| 3179 (2) | 3197 (C1) 3197 (C2) 3476 (EC)5292 (1) | IBM-3179-2 | 24 X 80 color display; this workstation type is also emulated by a color workstation function. |
| 3180 (2) | 3197 (D1) 3197 (D2) 3197 (W1) 3197 (W2) | IBM-3180-2 | 27 X 132 monochrome display |
| 5555 (B01) | 5555 (E01) | IBM-5555-B01 | 24 X 80 or 27 x 132 double-byte character set (DBCS) monochrome display; this workstation type is emulated by a workstation function that supports DBCS display. |
| 5555 (C01) | | 5555 (F01) | IBM-5555-C01 | 24 x 80 or 27 x 132 DBCS color display; this workstation type is emulated by a workstation function that supports DBCS display. This display type is also capable of displaying 27 X 132 wide-screen color display when supported by the Telnet client. |
| 5555 (G01) | IBM-5555-G01 | 24 X 80 or 27 x 132 DBCS monochrome, graphics display; this workstation type is emulated by a workstation function that supports DBCS display. | |
| 5555 (G02) | IBM-5555-G02 | 24 x 80 or 27 x 132 DBCS color graphics display; this workstation type is emulated by a workstation function that supports DBCS display. | |
| 3477 (FC) | IBM-3477-FC | 27 X 132 wide-screen color display | |
| 3477 (FG) | 3477 (FA) 3477 (FD) 3477 (FW)3477 (FE) | IBM-3477-FG | 27 X 132 wide-screen monochrome display |
| 3277 (0) 3 | 3277 (DHCF) | IBM-3277-2 | 24 X 80 monochrome display |
| 3277 (0) 3,4 | 3278 (DHCF) | IBM-3278-2 | 24 X 80 monochrome display |
| 3278 (0) 3 | IBM-3278-2-E 5 | 24 x 80 monochrome display | |
| 3278 (0) 3 | IBM-3278-3 | 24 x 80 monochrome display | |
| 3278 (0) 3 | IBM-3278-4 | 24 x 80 monochrome display | |
| 3278 (0) 3 | IBM-3278-5 | 24 x 80 monochrome display | |
| 3279 (0) 3 | 3279 (DHCF) | IBM-3279-2 IBM-3279-2-E 5 | 24 X 80 monochrome display |
| 3279 (0) 3 | IBM-3279-3 | 24 x 80 color display | |
| 3812 (1) | IBM-3812-1 | 3812 printer (SBCS) | |
| 5553 (B01) | IBM-5553-B01 | 5553 printer (DBCS) | |
| VT100 (*ASCII) 6 | DEC-VT100 VT100(7) VT102 DEC-VT102 DEC-VT200 DEC-VT220 VT200(7) VT220(7) | 24 x 80 monochrome ASCII display |
Considerations:
1 All 5250 workstations, except 5555 (B01) and 5555 (C01), can operate as 5251-11 workstations.
2 This workstation can be configured to be either 24 x 80 or 27 x 132. You must determine the mode of the workstation before setting the workstation type parameter value.
3 The system supports only 24 X 80 screens in remote 327x workstations. Remote 3277 (both distributed host command facility (DHCF) and regular) workstations are mapped to IBM-3277-2. Remote 3278 workstations are mapped to IBM-3278-2. Remote 3279 workstations are mapped to IBM-3279-2.
4 Some Telnet 3270 full-screen (TN3270) or 3278-2 emulator packages do not support write-structured fields correctly. Because of this, 3278-2 type devices are mapped to 3277-2 devices by the Telnet server implementation to allow the system to work with those TN3270 implementations.
5 The extended attributes highlighting is supported. Underline, blink, and reverse video are included. 3270 DBCS processing is also supported.
6 The VT100 virtual device supports VT220 devices.
7 VT100, VT200, and VT220 are not official terminal type names. However, some implementations negotiate using these names as the terminal type value.