Toshiba Strata DK 280 Installation Manual page 252

1. Configure the PDIU-DS as a DTE device:
Disassemble the PDIU-DS and place jumper plugs
PI
- P9 in the "B-C" position (MODEM).
Reassemble the PDIU-DS and mark "B-C" 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
port circuit per the wiring diagrams in Chapter 7-
Wiring Diagrams.
3. Connect the appropriate RS-232 cable between
the modem and the PDIU-DS. Figure 6-29 shows
an example PDIU-DS to "smart modem" RS-232
connection.
IMPORTANT!
All ten PDIU-OS EIA leads (signals) should be
connected to the modem. Consult the
modem's documentation for correct RS-232
pin requirements; the requirements may vary
with each manufacturer.
4.
5.
6.
Use the programs below to configure the PDIU-DS
to connect to an asynchronous modem (see
Chapter 9-Instructions for explanations and
record sheets).
Program 20
W LED 01:
Should always be ON for PDIU-DS
ports
Connect the line side of the modem to a
RSTU/RSTS, RSTUS2, PSTU, RDSU or PESU
standard telephone circuit or a dedicated CO line
(consult the modem's documentation to install it to
a CO line). Chapter 7-Wiring Diagrams provides
RSTU/PESU/PSTU/RDSU/RSTS station port
wiring information.
Set the PDIU-DS DIP switch (SWI-1 - 4) for the
desired application. Figure 6-33 shows the DIP
switch location and Subsection 6.9.3 describes
switch functions.
Note:
If the modem tracks carrier detect (DCD,
AT&Cl), SWl(4) should be 'ON,"and SWl(2)
should be OFF when PDIU-OS is connected
to a modem.
LED
02: Should be ON for PDIU-DS ports
connected to modems, enabling the use of AT
commands and result codes when-incoming
calls are made from outside the system to
modems connected to PDIU-DSs.
LED
03: Should be set ON for PDIU-DS ports
connected to modems.
LED
04: Should always be ON for PDIU-DS
ports.
LED
05: Should be OFF if the system is
installed behind a PBX/Centrex that uses
access codes to place outgoing trunk calls.
LED
06: Should be OFF for DlUs connected
to modems. The modem cable must be
modified per Figure 6-29 or 6-38; or the PDIU-
DS internal jumper plugs must be set per the
instructions in the 280 Admin user guide.
LEDs 17
- 20: Data security groups can be
used to allow or deny digital telephones
equipped with PDIU-Dls access to the PDIU-
DS ports connected to a modem. DIU stations
can only make data calls to DlUs in the same
data security group.
Program
Pl-For each PDIU-DSlmodem pair, assign
the digital, RSTU, RDSU/RSTS, and PSTU (or PESU)
ports that will be connected to the PDIU-DS and
modem, respectively.
Program
22/33-If more than one modem/PDIU-DS
pair is configured as a system modem pool, the PDIU-
DSs should be set to hunt each other in Program 22.
The modem RSTU, PSTU, RDSU/RSTS, or PERU
ports should be set to hunt each other in Program 33.
Program
31-LED 18 should be turned on for all
RSTU, RDSUIRSTS, PESU or PSTU station ports that
are connected to modems. This provides data security
by preventing executive or privacy override of modem
calls.
Modem Setup Recommendations
1. Always make sure the escape sequence of the
telephone PDIU-DI is default (+++): Send AT
command ATS2=43 to PDIU-DI).
2. Make sure to use a modified modem cable (see
Figures 6-29 and 6-38 for more details); or that the
PDIU-DS internal jumper plugs must be reset per
the instructions of the 280 Admin user guide.
I
6-52 January 1996