Receiving Message Data From The Host System - IBM 3274 User Manual

the Talk position, or (2) receiving a Disconnect command
from the host system (SDLC mode operation only), or (3)
receiving the automatic time-out of the 3274. When the
telephone line is disconnected, the 3872's Ready light
should turn off.
8. You are now free to send a new message to, or to receive a
message from, the host system.
Receiving Message Data from the Host System
At a
3274
with an Integrated Modem and with the Auto
Answer Feature Installed
1. When a 3274 has the Auto Answer feature installed and the
host system operator wishes to send a message to one of
the attached display stations or printers, the message is
received automatically. You do not have to be present if
the Data/Talk switch is set to the Data position. If
necessary, set the Pri/Sec «Primary/Secondary) Line Speed
switch to the appropriate position.
Notes:
a. If the Data/Talk switch is set to Talk and the telephone
rings, pick up the telephone handset, pull up the
exclusion key (U.S. and Canada only), and, when
instructed by the host system operator, (1) set the
Data/Talk switch to the Data position and (2) hang up
the telephone handset. The Call in Progress light
(located next to the Data/Talk switch) should turn on.
b. If a call has been answered and data or control
information is not received or transmitted by the 3274
within approximately 60 to 75 seconds, the 3274 will
automatically disconnect from the telephone line. This
time-out function prevents the 3274 from tying up the
telephone line when it receives an erroneous telephone
call.
Section
1.
Operator Information
1-53