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| Technical Reference | ||
Register | Default | Function |
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| |
S27 (Continued) | Bit | Value | Result | ||
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| 2 | 4 | Disables V.32 modulation. | |
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| 3 | 8 | Disables 2100 Hz answer tone to | |
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| allow two V.42 modems to connect | |
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| faster. | |
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| 4 | 16 | Enables V.23 fallback mode. | |
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| 5 | 32 | Disables V.32bis mode. | |
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| 6 | 64 | Disable V.42 selective reject. | |
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| 7 | 128 | Software compatibility mode. This | |
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| setting disables the codes and | |
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| displays the 9600 code instead. The | |
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| actual rate of the call can be viewed on | |
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| the ATI6 screen. Used for unusual | |
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| software incompatibilities. Some | |
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| software may not accept 7200, | |
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| 12,000, and 14,400 bps or greater | |
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| result codes. | |
S28 | 0 | Eliminates the V.32 answer tones for a faster connection. | |||
| 8 | Default item, all times are in tenths of seconds. | |||
| 255 | Disables all connections except V.32 at 9600 bps. | |||
S29 | 20 | Sets the duration, in tenths of a second, of the V.21 | |||
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| answer mode fallback timer. | |||
S30 | 0 | Reserved |
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S31 | 128 | Reserved |
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