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Recognize Terminal AHention
The 3708 recognizes the break line condition from the device as an attention or
signal (SIG). The following table shows how the break line condition works.
Half Duplex
Control Unit
Full Duplex
Control Unit
[1,0]
Terminal Transmitting
nata to 3708
ATTEN
ATTEN
3708 Transmitting
nata to Terminal
SIG
ATTEN/SIG'
No nata
SIG
SIG
I-The Attention Key Substitution Character is sent to the host when the break
line condition is interpreted as an attention. The 3708 inserts the Attention Key
Substitution Character into the data stream.
0- The 3708 ignores the break line condition when it is interpreted as an
attention.
Allow Terminal Break
The 3708 sends a break to the terminal after receiving a signal from the SNA host.
[1,0]
I-Send a break to the terminal.
O-Do not send a break to the terminal.
Delete Rubout Character
[1,0]
Line Quiet Time
l-Rubout characters (X'7F') that are received from the device are deleted.
O-Rubout characters (X '7F') that are received from the device are not deleted.
Note: Normally, Delete Rubout Character is used only for paper tape or magnetic
tape.
[000 - 255]
When operating with a half duplex facility (Full Duplex Line is set to 0; see "Full
Duplex Line" on page 13-36), this field defines the number of character times that
the 3708 waits to allow the line to become temporarily inactive after a line
turnaround is received.
The recommended value for this field is 000.
~
If
data is coming from the terminal, the 3708 transmits the attention substitute character (ATTEN) to the host. If
data is not coming from the terminal, the 3708 transmits a SIG command.
13-38
3708 Planning.and Installation
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