Nortel 2000 Software Reference Manual page 245

Book C
During this process, tn3270 broadcasts for map3270 and
termcap – even if the Remote Annex load_broadcast
parameter is set to N.
If tn3270 follows the configured load-dump sequence but
still cannot find map3270 and termcap, it uses default,
compiled versions of the files that are built into the
Remote Annex's operational image. The default
map3270 file is shown in Table C-73. The default
termcap file contains definitions for the following
terminal types: VT100; WYSE Models 75 and 85; and
IBM 3151 (For term_var, specify these as vt100, wy75,
wy85, and ibm3151. See Step 3.)
Another Remote Annex cannot act as a boot-server for
map3270 and termcap because a boot server only returns
files in its cache, and these two files are not cached.
5. Configure each terminal you specified in Step 3 to transmit 7-bit
(rather than 8-bit) control codes, to match the 7-bit codes in
termcap and map3270.
At the same time, if your terminal has a keypad, you may want to
configure the terminal to take advantage of the map3270 keypad
mappings. For example, if you are using a Remote Annex term_var
of vt100 but the terminal has a numeric keypad (which an actual
vt100 does not), you can configure the terminal as VT200 7 bit,
VT300 7bit, or VT400 7bit, which do support keypads. The model you
select depends on the capabilities of the terminal. Consult the
programmer's manual for the terminal being emulated. For example,
if you are configuring a VT100 to emulate a VT220, use the VT220
DEC Programmer's Reference Manual .
Remote Annex Administrator's Guide for UNIX
Chapter 3 Using the CLI Commands
Book C-227