AMX UDM-0102 - Manual (Page 32)

UDM-RX02 Wiring and Connections
20 UDM-0102 and UDM-RX02 Operation/Reference Guide
The following table describes the pinouts for the RJ-11 connector:
RJ-11 connector pinouts
Pin Function Description
Pin 1 DCD Data Carrier Detect
Pin 2 TD Transmit Data
Pin 3 RD Receive Data
Pin 6 DSR Data Set Ready
Pins 4 & 5 SGND Ground
Pin 1 DTR Data Terminal Ready
Pin 7 RCS Clear To Send
not used RTS Request To Send
not used RI Ring Indicator