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PROGRAMMING PROCEDURES
SECTION 200-255-311
FEBRUARY 1992
CHAPTER 11
DATA SWITCHING
DATA
1. Digital
Data Interface
Unit Data Block (Table
11-I)
1.01 The DDIU Data Block (DDIU Program)
de-
fines all parameters
of a given Digital Data Inter-
face Unit including
the PDIU-DI
and PDIU-DS.
A
DDIU
Data
Block must be completed
for each
DDIU/PDIU
in the system.
Not all of the prompts
listed
below
are used
for both
DDlUs
(-MA or
-MAT) or PDlUs (-DI or -DS). The response
given
totheTYP
(DDIU/PDIU
type) promptwill
determine
which
prompts
will be given.
Refer to the notes
found
in Table
11-l to determine
which prompts
can be expected
for each DDIU/PDIU
type. Data is
entered
as follows:
REQ (Request)-Indicates
that the program
has
loaded.
Three responses
are possible:
NEW-To
create a new Data Block.
CHG-To
alter an existing
Data Block.
OUT-To
delete an existing
Data Block.
POR (Port Number)--Identifies
the hardware
lo-
cation
of the DDIU/PDIU
circuit that is to be
defined.
The port number
has two parts:
1)
2)
NDCU,
NDKU or NMDU
PCB location:
PERCEPTlONe:
LOO - Li 1; L15 * L26
(NW
PERCEPTIONex:
LOO - L31.
Circuit number
on that PCB: 1 - 8 (X) (See
Note 3.) on the NDCU/NDKU
type or 1 - 4
(X) on the NMDU type.
Enter:
Port number
of DDIU (LNNX).
NOTES:
1. There
is a limit of four data PCBs per
cabinet.
2. Port L318 cannot
be assigned.
3. The eighth circuit of the NDKU cannot be
used
for PDIV-DI
or PDIU-DS
assign-
ment.
4.
When programming
a PDIU-DI
or PDIU-
DS, these
data
units are programmed
onto the ports adjacent
to the port the
NDKU PCB is programmed
on.
For example:
If the NDKU is in slot L06, the
PDlUs are programmed
on to L07. If the
NDKU is in slot L 1 I, the PDllJs are pro-
grammed
on to L 12, etc.
PDIU (DIU Style)-Tells
the system if a new D.04-
style digital data unit (PDIU-DI
or PDIU-DS)
is
being
assigned
to this port. Y = PDIU (D.04
Software),
and N = DDIU.
Enter: Y or N.
ATC (AT Commands)-Tells
the system
if you
need to activate
the "Echo Back" feature
of the
AT command
set, when
the new style data
interface
units (PDIUs)
are connected.
When
connected
to a modem,
for modem
pooling,
Echo is off (N). Y = Echo on, and N = Echo off.
Enter: Y or N.
TYP (Type)--Identifies
the type of hardware
that is
to be connected
to this port.
Enter:
DIUl
(DDIU-MA/PDIU-DS)
or DIU2
(DDIU-MAT/PDIU-DI).
DN (Directory
Number)-Assigns
the directory
number
(data number)
of the DDIU/PDIU.
Enter:
1, 2, 3, or 4 digits.
HNT(Hunt
Directory
Number)-Defines
the data
station
to which this DN hunts. (Used with the
Hunting
feature.)
Enter: XXXX (1 - 4 digits) for the next DN in the
hunt group or NONE.
COS (Class
of Service)-Assigns
one of the 16
Classes
of Service
to the data
station.
(The
Classes
of Service
are defined
in the DCOS
Program.)
Enter: COS Number
(0 - 15).
&
GOD(Groupof
DDIUs/PDIUs)-Assigns
the DDIU/
PDIU
to one of the
16 possible
DDIU/PDIU
groups.
Dial access into a group can be denied
by Class of Service.
Enter: 0 - 15.
11-l
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