Toshiba Strata DK 16 Installation And Maintenance Manual page 254

REMOTE ADMINISTRATION AND MAINTENANCE PROCEDURES
SECTION 100-816-600
MARCH 1993
PPTC MODIFIED WIRING FOR EXTERNAL MODEM TO TTY CONNECTION
PPCT (Modular to DB25) ADAPTOR, MODIFIED WIRING FOR
CONNECTING TTY JACK TO AN EXTERNAL MODEM:
QSMU OR PIOU/PIOUS,
TTY JACK
MODULAR PIN NO.
1
2
3
4
5
6
IMPORTANT:
REMOTE
MODEM
RS-232
CABLE
FIGURE 4
REMOTE MAINTENANCE USING IMDU MODEM (DK16 ONLY)
TABLE RM-A
PPTC1A-5M ADAPTOR
MODULAR PIN NO.
to RD RD, 6 to
to TD TD, 5 to
to DSR DSR, 4 to
to DTR DTR, 3 to
to DCD DCD, 2 to
to SG SG, 1 to
*
PPTC1A-5M, pins 2 & 3 and pins 8 & 20 must
be reversed in the field, as shown, for modem
connection. Set Hayes modem to track status of
carrier detect signal (AT & C1) and to answer
(ATS0 = 1).
CO LINE
TELEPHONE
NETWORK
-4-
MODEM
RS-232
LEAD NAME
DB25 PIN NO.
3* RD
2* TD
6 DSR
20* DTR
8* DCD
7 SG
4 Jumper to 5 RTS to CTS
PIOU OR PIOUS
IMDU
DK16
CO LINE
CO LINE
CIRCUIT
DK16
CO line connects to IMDU port (619)
via: DISA, Ring transfer, or ringing
assignments in Program 78
ROM
AND
RAM
TIME
SWITCH