COURIER HIGH SPEED MODEMS
  | Factory | 
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Switch  | Setting  | Function  | |
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3  | ON  | Result Code Display | |
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  | OFF Results suppressed  | |
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  | ON  | Results enabled  | 
4  | OFF | Command Mode Local Echo  | |
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  | OFF Keyboard commands displayed  | |
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  | ON  | Echo suppressed  | 
5  | ON  | Auto Answer  | |
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  | OFF Modem answers on first ring  | |
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  | ON  | Auto answer disabled  | 
6  | OFF | Carrier Detect Operations  | |
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  | OFF Courier sends CD signal when it connects  | |
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  | with another modem, drops CD on  | 
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  | disconnect  | 
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  | ON  | CD always ON (Override)  | 
7  | OFF | Auxiliary, DIP Switch 3 ON  | |
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  | OFF Result codes in Originate and Answer  | |
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  | mode  | 
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  | ON  | Result codes in Answer mode disabled  | 
8  | ON  | AT Command Set Recognition  | |
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  | OFF Command recognition disabled (Dumb  | |
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  | mode)  | 
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  | ON  | Recognition enabled (Smart mode)  | 
9  | OFF | Escape Code (+++) Response  | |
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  | OFF Modem hangs up, returns to Command  | |
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  | mode, sends NO CARRIER result  | 
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  | ON  | Modem maintains connection, returns to  | 
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  | Command mode, sends OK result  | 
10  | OFF | ||
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  | OFF Load from nonvolatile memory (NVRAM)  | |
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  | ON  | Load factory settings from read only  | 
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  | memory (ROM)  |