REMOTE ADMINISTRATION AND MAINTENANCE PROCEDURES

SECTION 100-816-600

MARCH 1993

TABLE RM-A

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,

 

 

PPTC1A-5M ADAPTOR

MODEM

TTY JACK

 

 

 

 

 

 

RS-232

MODULAR PIN NO.

MODULAR PIN NO.

DB25 PIN NO.

LEAD NAME

1

to

RD

RD,

6

to

3*

RD

2

to

TD

TD,

5

to

2*

TD

3

to

DSR

DSR, 4

to

6

DSR

4

to

DTR

DTR,

3

to

20*

DTR

5

to

DCD

DCD, 2

to

8*

DCD

6

to

SG

SG,

1

to

7

SG

4 Jumper to 5 RTS to CTS

IMPORTANT: * 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).

REMOTE

MODEM

RS-232

CABLE

CO LINE

TELEPHONE

CO LINE

 

 

 

NETWORK

 

PIOU OR PIOUS

IMDU

DK16

CO LINE

CIRCUIT

DK16

ROM

AND

RAM

TIME SWITCH

CO line connects to IMDU port (619) via: DISA, Ring transfer, or ringing assignments in Program 78

FIGURE 4

REMOTE MAINTENANCE USING IMDU MODEM (DK16 ONLY)

-4-

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Toshiba DK 16, DK8 manual Remote Maintenance Using Imdu Modem DK16 only