Multi-Tech Systems BL-Series - Manual (Page 155)

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Appendix J - RS-232C Interface Specifications
25 POS
MALE DSUB
8 POS.
MINI-DIN
TD 2
RCV3
RTS 4
CTS 5
GND 7
1 Handshake
Out
2 Handshake
In
4 GND
8 GND
3 TD
5 RCV
8 7 6
5 4 3
2 1
8 POS.
MINI-DIN
FEMALE
Figure I-4. MAC Cable