Oki Microline 520 - Page 259

Commonly Used Serial Cable Configurations
IBM 25-Pin Cable Configuration
Computer Printer
PG 1 1 PG
TD 2 3 RD
RD 3 2 TD
CTS 5 11 SSD
DSR 6 20 DTR
6 DSR
SG 7 7 SG
4RTS
5CTS
IBM 9-Pin Cable Configuration
Computer Printer
RD 2 2 TD
TD 3 3 RD
SG 5 7 SG
DSR 6 20 DTR
6 DSR
CTS 8 11 SSD
4RTS
5CTS
Microline 520/521 Service Handbook 4 - 51 Failure Analysis
P/N 59257803