900: Entry Acceptance; 999: Specification Panel - IBM 3270 Manual

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Each digit allows or disallows one of the following:
Digit 1 2 3 4 5 6 7 8
11
L
DCE supported for address calls
L.:=
Oat.a Cir.cuit Terminating Equipment (DCE) supported
for direct calls
Reserved (enter 0)
Extension key supported (must be
1
if digit
1, 2,
3, or 4 is 1)
--------'.Disconnect key supported
...__ _ _ _ _ _ _ Local, communicate key supported
- - - - - - - - Dial key supported
- - - - - - - - - Direct key supported
Note: If the X.21 Switched feature is being used, either digit 7 or digit 8
must be specified as 1, depending on which DCE support is used.
Port AO access to the X.21 options is determined as follows: With the
exception of the Direct and Dial keys (digits 1 and 2), port AO always has
access to all the X.21 options. Access to Direct and to Dial is dependent on
the status of the DCE for direct calls (digit 7) and address calls (digit 8). If
direct calls are supported (digit 7 specified as 1), the Direct key is supported
on port AO. If address calls are supported (digit 8 specified as 1), the Dial
key is supported on port AO. If both digits 7 and 8 are specified as 1, both
the Direct and Dial keys are supported on port AO.
Example: 00011001 indicates thatthe Disconnect key (digit 4 specified as 1)
and the Extension key (digit 5 specified as 1) can be used on all Category A
terminals attached to the 327 4. All Category A terminals support the DCE
for address calls (digit 8 specified as 1). Since the E:l{tension key allows
access to all other X.21 keys, it must be specified if the other keys are to be
used. Regardless of the response to this sequence number, the terminal
attached to port AO always has access to all the X.21 options.
900: Entry Acceptance
Sequence number 900, which appear_s as part of the sequence number 999
display, prompts the operator to ente:r: a 1 if, after the entries are verified,
all the responses are entered correctlY'. If the 3274 detects incorrect
responses, it automatically
change~
the 1 back to a 0, an operator code is
displayed.for the incorrect information, and incorrect entries are
intensified.
999: Specification Panel
Sequence number 999 displays all the responses entered during the
c,ustomizing operation, permitting the operator to review the entries and to
make any corrections needed. The Initial Customizing Procedure Form
instr:ucts the operator how to reply to this sequence number.
Chapter 3. Preparing to Customize
3-61