FXO Port Pin Assignments

The FXO Telephony Interface has 2 RJ-11C/W modular jacks. The following diagram and table show the assignments of the pin for the R-J11 port.

RJ-11pin Signal

1

2Tip

3

Ring

 

 

 

 

 

1 2 3 4

4

FXS Port Pin Assignments

The FXS Telephony Interface has 4 RJ-11C/W modular jacks. The following diagram and table show the assignments of the pin for the RJ-11 port.

RJ-11 pin

Signal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Not connected

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

Tip

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

Ring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

 

4

Not connected

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

81