A complete list of S-Registers A-11

Register

Default Function

 

 

 

0

1

Dial security enabled.

 

1

2

Prompting enabled.

 

2

4

Local-access password protection

 

 

 

enabled.

Enabling local-access password protection disables the &Zn=s command (which stores up to 10 phone numbers) because stored phone numbers occupy the same space in NVRAM as the dialback numbers for Dial Security accounts.

S54

64

Symbol rate bit-mapped register used primarily by 3Com

 

 

Technical Support for debugging purposes.

 

 

Bit

Value

Result

 

 

0

1

Disable 2400 symbol rate.

 

 

1

2

Disable 2743 symbol rate.

 

 

2

4

Disable 2800 symbol rate.

 

 

3

8

Disable 3000 symbol rate.

 

 

4

16

Disable 3200 symbol rate.

 

 

5

32

Disable 3429 symbol rate.

 

 

6

64

Disable Call Indicate (CI).

 

 

7

128

Disable V.8.

 

 

 

S55

0

Trellis code bit-mapped register used primarily by 3Com

 

 

Technical Support for debugging purposes.

 

 

Bit

Value

Result

 

 

0

1

Disable 8S-2D mapping.

 

 

1

2

Disable 16S-4D mapping.

 

 

2

4

Disable 32S-2D mapping.

 

 

3

8

Disable 64S-4D mapping.

 

 

7

128

Enable phase roll detection

S56

0

Bit-mapped register primarily used by 3Com Technical

 

 

Support for debugging purposes.

 

 

Bit

Value

Result

 

 

0

1

Disable non-linear coding.

 

 

1

2

Disable TX level deviation.

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Image 147
3Com 56K manual Dial security enabled, Prompting enabled, Enabled, Technical Support for debugging purposes