Switch SW1-3:  Extended Signaling Rate (ESR)
The setting for switch 
SW   | 
  | 
Off  | |
On  | 
Switch SW1-4:  Not Used
2010AS3297 Manual  | 5  | 
B&B Electronics 
PH (815) 
The setting for switch 
SW   | 
  | 
Off  | |
On  | 
2010AS3297 Manual  | 5  | 
B&B Electronics 
PH (815)