Toshiba STRATA DK24 Manual page 227

INSTALLATION-PERIPHERALS
SECTION 200-096-208
FEBRUARY1991
Program 20
LED 01:
Should always be ON for PDIU-
DS ports
LEDO2:
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 ON if the system is
installed behind a PBX/Centrex that uses
access codes to place outgoing trunk
calls.
LEDs
17 W 20: Data security groups can
be used to allow or deny digital tele-
phones 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 21
l
For each PDIU-DS/modem pair, assign
the ports on the PDKU and PSTU (or
PESU) thatwill beconnectedtothe PDIU-
DS and modem, respectively.
Program 22/33
l
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 PSTU
or PESU ports should be set to hunt each
other in
Program 33.
Program 31
@ LED 18 should be turned on for all PESU
or PSTU station ports that are connected
to modems. This provides data security
by preventing executive or privacy over-
ride of modem calls.
12.70 PDIU-DS Disassembly and Assembly
12.71
To set the jumper plugs
(Pl - P9)
on the PCS
inside the PDIU-DS for DCE or DTE operation, the
PDIU-DS must be disassembled. Disassemble the
PDIU-DS in accordance with the following steps:
12.72 Disassembling the PDIU-DS
1) Remove the four screws securing the bottom
panel to the rest of the unit (see Figure 8-27).
These screws are not captive; so place to-
gether where they can be easily accessed.
2) Remove the bottom panel.
3) Remove the PCB inside the PDIU-DS by
lifting the back panel from its side grooves.
4) Turn the PCB over and set the jumper plugs
(Pl
N
P9)
as follows:
l
If the PDIU-DS is connected to a DTE,
set the plugs to the "A-B" position.
l
If the PDIU-DS is connected to a DCE
device, set the plugs to the "B-C" posi-
tion.
NOTE:
Do not cut PDIU-DSjumper wires for DKinstal-
lations. Jumper wires are for PERCEPTION
applications on/y.
12.73 Assembling the PDIU-DS
1) Position the back panel to the PCB (see Fig-
ure 8-27).
2) Slide the back panel down into its side grooves.
3) Attach the bottom panel, and secure with the
four non-captive screws.
8-44