314: Multipoint Or Point-To-Point Network; 317: Switched Network Backup (Snbu); 318: Normal Or Half-Speed Transmission - IBM 3270 Manual

314: Multipoint or Point-to-Point Network
Enter a 0 if the 3274 is part of a multipoint r;ietwork; enter a 1 if it is part of
a point-to-point network. 1
Note: If the 3274 is attached to an IBM 3865 Modem Model 2, or ifthe 3274
has integrated modem feature 5842 installed, you must enter a 0.
317: Switched Network Backup (SNBU)
If your modem does not have SNBU capability, if you do not wish to use
SNBU, or if you are using the CCITT V.35 Interface feature (1550), enter a 0
in response to this sequence number.
2-Wire SNBU:
If your modem has SNBU capability and you wish to use this capability,
you should customize a second diskette, using the modification procedure in
Chapter 5. When customizing the second diskette, enter 1 in response to
this sequence number
1
if your modem is a 3872, 3874, 3875, or a 1200-bps
integrated modem; enter a 0 in all other cases.
4-Wire SNBU:
If the 327 4 is attached to an IBM 3863, 3864, or 3865 Modem with the 4-wire
SNBU feature, enter a 0.
Note: A switched network attachment to some original equipment
manufacturer (OEM) equipment requires the use of a protective device.
This might have to be ordered from an OEM communication equipment
supplier and installed separately.
318: Normal or Half-Speed Transmission
Enter a 0 if the modem does not have half-speed transmission capability, if
full-speed transmission capability is desired, or if you are using the CCITT
V.35 Interface feature (1550). Enter a 1 if half-speed transmission operation
is desired.
If the modem has half-speed transmission capability, determine whether this
capability can be controlled externally by the 3274 or by a switch on the
modem. If the capability can be controlled by a switch on the modem, it is
recommended that a 0 be entered and that the switch be used. 1
Note: To have the capability to operate in either full-speed or half-speed
mode, two system diskettes may be generated (as described in Chapter 6),
one for full-speed operation and one for half-speed operation. To switch
modes, select the other system diskette and perform IML procedures.
Ensure that diskettes are appropriately labeled.
This parameter must be compatible with the host system communication
controller and/or the modem.
Chapter 3. Preparing to Customize
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