Toshiba strata CT Installation & Maintenance Manual page 273

Flowchart 8-8
If a digital or electronic telephone
is in the Programming mode, it is
not possible to enter the Remote
Maintenance mode.
H
C
in the TTY position. For RSIU/RSIS check
Program 76-1 and verify the port is
Check that the modem or terminal connected
to the TTY port is wired correctly per the
PIOU/PIOUS, RSIU/RSIS MDF wiring in
Correct above if necessary or replace
Strata CT I&M Manual October 2000
Remote Maintenance Faults
Check that the baud rate switch (SW2, push-button switch on PIOU/PIOUS) is set to match the remote
terminal baud rate (300 bps LED ON, 1200 bps LED OFF) .
Check that the RSIU, RMDS, IMDU, RSSU, PIOU or PIOUS is installed correctly.
If using RSIU/RSIS/RMDS, check that Program 76 settings match DKAdmin/DKBackup PC and modem
or remote terminal/modem.
Check that communication parameters of remote terminal are set to match the PIOU or PIOUS TTY
port or IMDU (7-data bits, even parity, 1-stop bit).
External modem connected
to the PIOU/PIOUS TTY port
8-2
Check that the
PIOU/PIOUS SW3 switch is
programmed as 1 for TTY.
Correct as necessary.
8-3
Is the
YES
fault
cleared?
NO
Chapter 4.
PIOU or PIOUS.
START
This chart assumes that the remote
terminal and modem have no fault and that
Remote Maintenance does not operate.
8-1
Is Remote
Maintenance connection
via external modem on TTY
port or IMDU
modem?
END
• The TTY port is the top modular
jack (SMDR is bottom) of the
PIOU/PIOUS.
• The modular cord connecting the
TTY port to the terminal or external
modem must be 6-wires.
• TTY can be any jack on RSIU/RSIS
- see Progam 76.
IMDU modem installed on
PIOU or PIOUS
8-4
Check that the communication parameters of
the remote terminal are set to match the
IMDU (7-data bits, even parity, 1-stop bit).
Check that the PIOU/PIOUS SW3
switch is in the MODEM position.
•
Enable the IMDU by turning LED 14 ON in
Program 77-1.
•
If required, assign Exchange lines for
DISA or to ring IMDU in system Program
78, Code 51~ 53.
•
When calling IMDU via DISA or ring
transfer, dial #19.
If calling RMDS or IMDU via DDI lines, call
the station number assigned in Program
71, 72 and 73.
Correct above if necessary or
replace IMDU or PIOU(S).
8-5
Is the
fault
cleared?
Call your technical
support group.
Fault Finding
1886
8-15