S-Registers
I-7
Bit Value Result
S53 126 Bit-mapped register. (See Chapter 1, Using the AT
Command Set, for instructions about how to set
bit-mapped registers.)
0 1 Enable dial security.
1 2 Enable autopass fallback.
2 4 Enale local-access password
protection.
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 V.8 Call Indicate (CI).
7 128 Disable V.8 Mode.
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.
4 16 Reserved.
5 32 Reserved.
6 64 Reserved.
7 128 Enable phase roll detection.
Register Default Function
