tn5250 Developer Resources
The IETF tn3270e
Working Group defined standards for 3270 and 5250 over TCP/IP. These
standards make use of the existing Telnet standards.
- RFC 854
- Telnet Protocol Specification
- RFC 855
- Telnet Option Specifications
- RFC 856
- Telnet Binary Transmission
- RFC 860
- Telnet Timing Mark Option
- RFC 885
- Telnet End Of Record Option
- RFC 1091
- Telnet Terminal-Type Option
- RFC 1205
- 5250 Telnet Interface
- RFC 1572
- Telnet Environment Option
- RFC 2877
- 5250 Telnet Enhancements. This standard extends RFC 1205 and includes a
useful list of references in section 13.
These documents are available online from IBM and include information
relevant to the tn5250 project.
- SC30-3533-04
- 5494 Remote Control Unit, Functions Reference.
- GA27-3960-05
- 5494 Remote Control Unit, User’s Guide.
- SC41-5603-01
- AS/400 International Application Development V4R2. Appendices A and F
describe the EBCDIC and ASCII character sets that IBM i supports.
- SC41-5101-01
- AS/400 National Language Support V4R2. Further information about
character sets, especially as it relates to display devices.
- SC09-2190-01
- CDRA Reference. Even more information about how character sets work on
IBM i, and how conversion between them should work.
- SC41-5401-00
- OS/400 Communications Configuration V4R1. Chapter 8 defines the
parameters that may be passed to IBM i over the telnet connection to
configure the display or printer device.
- PWSUBS (Zip file)
- APPC Password Substitution. This describes the scheme used for
automatic signon, which is currently unimplemented in tn5250.