ADTRAN 1200214L1 Network Card User Manual


 
110 IQ Probe User Manual 61200214L1-1
Appendix A. Pinouts
Table A-E
Pin Assignments for DB-25 to X.21 (DB-15) Adapter Cable
DB25 Pin# X.21 Pin# Function
1 1 SHIELD
2 2 TX (A)
3 4 RX (A)
4 3 CONTROL (A)
7 8 GROUND
8 5 INDICATION (A)
9/12 13 SIGNAL TIMING (B)
10 12 INDICATION (B)
19 10 CONTROL (B)
14 9 TX (B)
15/17 6 SIGNAL TIMING (A)
16 11 RX (B)