Pdiu-Ds To Modem Installation - Toshiba Strata DK 280 Installation Manual

DS disassembly/assembly instructions, and
Figure 6-32 provides jumper plug information.)
1 If the printer is a DTE device: It may not be
necessary to disassemble the PDIU-DS, since
it comes direct from the factory configured as
a DCE device. However, if uncertain,
disassemble the PDIU-DS and verify that
jumper plugs (Pl - P9) are in the "A-B" (DTE)
position. Reassemble the PDIU-DS and mark
"A-B" on the bottom identification label for
future reference. -(Subsection 6.9.7 provides
PDIU-DS disassembly/assembly instructions,
and Figure 6-32 provides jumper plug
information.)
2. Connect the PDIU-DS to the appropriate digital
telephone circuit per wiring diagrams in Chapter
7-Wiring Diagrams and information provided in
Chapter 5-Station Apparatus.
3. Connect the appropriate RS-232 cable between
the printer and the PDIU-DS (see Figure 6-28 and
6-30 for an example printer cable connection).
4.
If Steps 2 and 3 are done properly, the Power and
Ready LEDs on the PDIU-DS should light when
the printer is turned on and ready.
5. Set the PDIU-DS DIP switch (SWl-1 - 4) for the
desired application. Figure 6-33 shows the DIP
switch locations and Subsection 6.9.3 describes
switch functions.
Note:
If using Toshiba computers and printers with
X-On/X-OFF flow control, set SWI-(4) "ON"
on the DIU connected to the computer and
DIU connected to the printer.
IMPORTANT!
Check the printer's serial documentation for
correct RS-232 pin requirements. The
requirements vary with each manufacturer.
6. Use Program 20 to configure the PDIU-DS to
connect to a serial printer (see Chapter 9-
Instructions for instructions and record sheets).
H LED 01: Should always be ON for PDIU-DS
ports.
n LED 02: Should be OFF for PDIU-DS ports
connected to printers.
H LED 03: Should be OFF for PDIU-DS ports
that connect to DTE- or DCE-type printers.
q
n
n
LED 04: Should always be ON for PDIU-DS
ports.
LED 05: Should be OFF for PDIU-DS ports
connected to printers.
LEDs 17 w 20: Data security groups can be
used to allow or deny digital telephones
equipped with PDIU-Dls access to PDIU-DS
ports connected to a printer. DIU stations can
only make
data
calls to DlUs in the same data
security group.
7. Program 22 should be used to configure PDIU-
DSs to hunt if more than one PDIU-DS connected
to the same printer/server.
6.9.6 PDIU-DS to Modem Installation
Strata DK280 enables asynchronous-type (not
synchronous) modems to be connected to PDIU-DSs.
This allows RPCI-DI or PDIU-DI equipped digital
telephones that are connected to personal computers,
terminals, and other devices to share access to a
modem or modem pool.
IMPORTANT .!
Modems must be "smart modems" that
respond to AT commands and return result
codes. Modems are customer-supplied.
A modem(s) can be accessed internally for outgoing
data calls or externally for incoming data calls.
Modems operate as DCE devices; so PDIU-DSs that
are connected to them must be configured to operate
like a DTE device. In the example installation in Figure
6-25, the line side of the two modems are connected
to RSTU/RDSU/RSTS/RSTU2/PSTU/PESU ports to
establish a modem pool; however, the line side of
modems could be connected directly to a dedicated
CO line.
If modems are connected directly to telephone
network CO lines, automatic transfer of CO line voice
calls to system modems (data call) will not function as
described in the Data Interface User Guide. For best
operation and utilization of CO lines and modems, it is
recommended to connect modems to RSTU, RSTU2,
PSTU or RDSU/RSTS standard station ports in a
modem pool configuration. The RS-232 side of the
modem connects to the PDIU-DS with standard RS-
232 cables; the PDIU-DS line side (RJ-I1 connector)
always connects to its own individual digital port. Use
the following instructions to install modems to PDIU-
DSs.
6-42
January 1996