IBM 3274 User Manual page 39

Alt IML
Address 8 4 2 1
0000
Line Op
Call
ifl~Talk
Progress, Data
~--J~-----~---------
II fJ
IJ
II
Figure 1-13 (Part 1 of 2). 3274 Model51C Operator Panel with the
1-28
1200-bps Integrated Modem Feature and with
either (1) the Switched Line with Auto Answer
Feature or (2) the Nonswitched Line with SNBU
and Auto Answer Feature; and with the
Encrypt/Decrypt Feature