CHAPTER 4: AT Commands, S-Registers, and Result Codes
Register | Unit | Range | Default | Description | |
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S35 | decimal | 0 | 0 disables, 1 enables the V.25 | ||
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| data calling tone, which allows | |
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| remote data/fax/voice | |
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| discrimination. | |
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S36 | decimal | 7 | Specifies the action to take if | ||
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| negotiation fails when error | |
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| control is selected. (See S48.) | |
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S37 | decimal | 0 | Sets the maximum V.34 | ||
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| upstream speed at which the | |
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| modem attempts to connect. | |
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| 0 | = maximum modem speed |
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| 1 | = reserved |
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| 2 | = 1200/75 bps |
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| 3 | = 300 bps |
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| 4 | = reserved |
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| 5 | = 1200 bps |
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| 6 | = 2400 bps |
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| 7 | = 4800 bps |
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| 8 | = 7200 bps |
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| 9 | = 9600 bps |
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| 10 = 12,000 bps | |
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| 11 = 14,400 bps | |
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| 12 = 16,800 bps | |
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| 13 = 19,200 bps | |
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| 14 = 21,600 bps | |
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| 15 = 24,000 bps | |
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| 16 = 26,400 bps | |
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| 17 = 28,800 bps | |
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| 18 = 31,200 bps | |
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| 19 = 33,600 bps | |
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