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Appendix C: Meridian Modular Telephones add-on modules installation Page 429 of 504
Telephones and Consoles Description, Installation, and Operation
Figure 84
M2317 data terminal and Data Option power supply connection
Table 70
Connections for the Apple Macintosh to the M2317
Asynchronous Data Option (ADO)
9-pin connector
(from terminal)
25-pin (RS-232-C) connector
(at ADO port)
Pin 3 to Pin 7
Pin 5 to Pin 2
Pin 9 to Pin 3
Note: Strap pins 4 and 5 and pins 6, 8, and 20 together.
12346
RS-232-C interface
connector (25 pins)
Exit port for telephone line
and handset free unit cords
5-pin power connector
for data communications
option Power Supply
+12 V
–12 V
+5 V Supply
+5 V Common
GND (+12 V Return)
553-AAA635