Filter
Top Products
A ppendix B. Connector Pinouts
B-8 ESU 120e User Manual 61200420L1-1
Table B-8. Adapter Cable D B25 to X.21, D B15 Connector
Base D rop (PBX)
The Drop has a DB-15 female connector as defined in Table B-9.
Table B-9. Pinout Connectors for Terminal Interface
Name DB25Pin DA15S Pin
Protective GND (Shield) 1 1
Signal GND 7 8
Control A 4 3
Control B 19 10
Indication A 8 5
Indication B 10 12
Transmit A 2 2
Transmit B 14 9
Receive A 3 4
Receive B 16 11
Signal Timing A 15/17 6
Signal Timing B 9/12 13
Pin Name
1 R x Data (output)
2 Frame Ground
3 Tx data (input)
4 Frame Ground
9 R x data (output)
11 Tx data (input)
5,6,7,8,10, 12, 13, 14,15 Not used