COURIER HIGH SPEED MODEMS
Register | Default  | Function  | 
S53  | 0  | |
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  | Security features you want enabled by  | 
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  | setting S53 to the total of the values in the  | 
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  | Value column in the table below. For  | 
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  | example, S53=3, enables Dial Security with  | 
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  | prompting. S53=5 enables Dial Security,  | 
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  | and   | 
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  | use ATSr.b=0 (OFF) or 1 (ON). For  | 
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  | example, ATS53.0=1 .2=1 turns on bits 0  | 
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  | and 2. To turn a bit off, set that bit to  | 
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  | zero, as in ATS53.2=0.  | 
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  | Bit | Value  | Result  | 
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  | 0  | 1  | Dial security enabled | 
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  | 1  | 2  | Prompting enabled  | 
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  | 2  | 4  | |
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  | protection enabled  | 
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  | NOTE: In addition, enabling local access  | ||
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  | password protection disables the &Zn=s  | ||
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  | command which stores up to ten phone  | ||
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  | numbers because stored phone numbers  | ||
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  | occupy the same space in NVRAM as the  | ||
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  | dialback numbers for Dial Security  | ||
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  | accounts.  | 
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S54  | 0  | Symbol rate   | ||
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  | primarily by U.S.Robotics Technical  | ||
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  | Support for debugging purposes.  | ||
Bit 6 (ATS54.6=1) disables Call Indicate (CI).
Bit 7 (ATS54.7=1) disablesV.8.
Summaries and Tables