Specifications

TechMemo 01-0011B August 26, 2004
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Settings for S27
Settings for S32
Settings for S33
3 8 Disable MNP handshake.
4 16 Disable MNP level 4.
5 32 Disable MNP level 3.
6 64 MNP incompatibility.
7 128
Disable V.42 operation. To disable V.42 detect phase, select the sum of bits 3 and 7 (in other
words S15 = 136 [8 + 128]).
Bit Value Result
01
Enables ITU-T V.21 modulation at 300 bps for overseas calls. In V.21 mode, the modem
answers both overseas and domestic (US and Canada) calls, but only originates V.21 calls
(default Bell 103).
1 2 Enables unencoded (non-trellis coded) modulation in V.32 mode.
2 4 Disables V.32 modulation.
3 8 Disables 2100 Hz answer tone to allow two V.42 modems to connect faster.
4 16 Enables V.23 fallback mode.
5 32 Disables V.32bis mode.
6 64 Disable V.42 selective reject.
7 128
Software compatibility mode. This setting disables the codes and displays the 9600 code
instead. The actual rate of the call can be viewed on the ATI6 screen. Used for unusual
software incompatibilities. Some software may not accept 7200, 12,000, and 14,400 bps or
greater result codes.
Bit Value Result
0 1 V.8 Call Indicate enabled.
1 2 Enables V.8 mode.
24Reserved.
3 8 Disable V.34, V.90, and V.92 modulation.
4 16 Disable V.34+ modulation.
5 32 Disable x2 modulation (select models only).
6 64 Disable V.90 modulation.
7 128 Disable V.92 modulation (select models only).
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 Reserved.
7 128 Disable shaping.