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INSTALLATION-PERIPHERALS
SECTION 200-096-208
FEBRUARY 1991
BASIC CONNECTION
DB25
PIOU
P&S
3-pair
Plug
Line Side of
External Modem Dedicated PSTU
ASCII Terminal J
Port (T&R) or
7
2
or
Direct to
_ External Modem
f
Dedicated
TTY
50 ft. max
Central Office
Modular
24 A WG Wire
T&R Connection
Toshiba
of External
Line (T&R)
Jack
Twisted Pair
Modularized
PPTCIA-SM,
2
Modem Only
RS232, Modular
l
7-bits
to DB25 Adaptor
l
Even parity
l
l-stop bit
L
ASCII TERMIN
BASIC WIRING
\L
(see: PIOU/PIOUS TTY and SMDR Wiring in Chapter 9 for more detail)
I
I
PIOU, SMDR Jack
PPTCI A-5M Adaptor
,-I RS-232
Modular Pin No. Modular Pin No. DB2.5 Pin No. / Lead Name
1 To - 6 To - 3
1 RD
2 To - 5 To - 2
TD
3 To - 4 To - 6 DSR
4 To - 3 To - 20
DTR
5 To - 2 To -
a
CD
6 To - 1 To - 7
SG
1 4Jumperto5 1 RTS to CTS
EXTERNAL MODEM
BASIC WIRING (see: PIOU/PIOUS TTY and SMDR Wiring in Chapter 9 for more detail)
PIOU, SMDR Jack
PPTCl A-5M Adaptor ~
RS-232
“““‘la;; Modular’l
3 To - 4 To -
4 To - 3 To -
5To- / 2 To -
6 To - 1 To -
t
DB25 Pin No. / Lead Name
G++
:
4 Jumper to 5 RTS to CTS
I
IMPORTANT:
* PPTClA-SM, pins 2 & 3 must be reversed
in the field, as shown, for modem connection.
FIGURE 8-21-PIOU/PIOUS (TTY) MAINTENANCE PORT (EXTERNAL MODEM OR ASCII-TERMINAL)
8-36