Pin to db-9 serial pin assignments, Appendix a, Table 1 – Quantum TC2201 User Manual
Page 81: Rj-11 pin assignments, Appendix a, 3-pin to db-9 serial pin assignments

Quantum TC2201 User’s Guide
61
Appendix A
A
3-Pin to DB-9 Serial Pin
Assignments
The pin assignments given for the 3-pin serial connection are in
reference to the serial receptacle on the rear panel of the TC2201.
Use an RS-232 null modem cable to connect the TC2201 to the
host system.
Table 1 RJ-11 Pin
Assignments
Pin No.
Function
Pin 1
Receive Data
to TC2201
Pin 2
Serial
common
(Ground)
Pin 3
Transmit
Data from
TC2201