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NOTE:
A digital telephone with a PDIU-DI attached
cannot be wall-mounted.
6.140 PDIU-DI to Personal
Computer
(PC)
Installation
6.141 The PDIU-DI always functions as a DCE
device; it transmits data on the Receive Data lead
(RD) and receives data on the Transmit Data lead
(TD). Most personal computers function as DTE
devices; PCs transmit data on the TD lead and
receive data on the RD lead. Follow the steps below
to install the PDIU-DI to a DTE or DCE PC:
NOTES:
1.
2.
1)
2)
Use the steps below when installing an
ASCII terminal, orany other DTE device to
a PDIU-DI.
The PDIU-DI can connect to a DCE com-
puter or any other DCE-type device using
a specially configured M-232
cable or
adapter; however, this applica tion is rarely
required.
lnstall the digital telephone that is to be
aquipped with PDIU-DI in accordance with the
i nstructions in Section 200-255-205, MDF
Jrrangement, Paragraph 1.01 and in Figure
5-2.
nstall the PDIU-DI in the digital telephone' s
)ase in accordance with the instructions in
' aragraph 6.130.
NOTE:
The PDIU-DI operates only as a DCE device;
therefore, unlike the PDIU-DS, it has no inter-
nal jumpers.
3) Connect the appropriate RS-232 cable be-
tween the PDIU-DI DB-25 female connector
and the PC' s appropriate asynchronous serial
communications port connector.
IMPORTANT NOTE!
Check the PC manufacturer' s
serial com-
munication port interface documentation
INSTALLATION INSTRUCTIONS
SECTION 200-255-204
FEBRUARY1992
for correct RS-232 pin requirements;
re-
quirements vary with each manufacturer.
The number of EIA RS-232 signals re-
quired (8,9, or 10 wires) will depend on the
application. When EIA signal requirements
are not known, connect the 10 EIA signals
listed in Paragraph 6.110. Figures 4-57,4-
58, and 4-59 provide diagrams for con-
necting RS-232 cables between PDIU-Dls
and a Toshiba printer and laptop com-
puter, IBM XT-type and A T-type personal
computers.
4)
5)
Set the PDIU-DVPDIU-DS DIP switch (SWl-
1 - 4) for the desired application. Figure 4-55
shows the DIP switch locations and Para-
graph 6.120 describes the switch functions.
Access the DEKT and DDIU Programs for
PDIU port connection and data button assign-
ments.
l
The port number entered for the PDIU-DI
in the DDIU Program is the adjacent port
number of the digital telephone.
Example: DKTportnumber= L024, PDIU-
DI port number = LO34
IMPORTANT NOTE.'
The eighth port (circuit) of the NDKU can-
not be used for data switching connections
(PDIU-DI or PDIU-DS).
6.150 PDIU-DS To Printer Installation
6.151 PERCEPTIONeLex enables serial printers
(laser, dot matrix, or other types) to be connected
to stand-alone data interface units (PDIU-DS).
Digital telephones equipped with PDIU-DI and
Electronic Telephones equipped with DDIU-MAT
can share access to these printers. Serial printers
operate as DCE or DTE devices, depending on the
vendor. The PDIU-DS can be connected to either
type, since it can be configured as a DTE or DCE
device. (The PDIU-DS comes from the factory
configured as a DCE device.) Follow the steps
below to install the PDIU-DS to a serial printer.
4-47
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