WSW19 (Transmission speed setting)
Selector | Function |
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| No. 1 | 2 | 3 |
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1 | First transmission speed choice | No. 4 | 5 | 6 |
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0 | 0 | 0 | : | 2,400 bps | |||
for fallback | |||||||
3 | 0 | 0 | 1 | : | 4,800 bps | ||
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| 0 | 1 | 0 | : | 7,200 bps | |
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| 0 | 1 | 1 | : | 9,600 bps | |
4 | Last transmission speed choice | 1 | 0 | 0 | : | 12,000 bps * | |
1 | 0 | 1 | : |
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for fallback |
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6 | 1 | 1 | 0 | : | 14,400 bps * | ||
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| 1 | 1 | 1 | : |
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7 | Not used. |
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8 | V. 17 mode | 0: | Permitted | 1: Prohibited | |||
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∙In those models with a maximum of 9600 bps capability, selection of 12,000 bps or 14,400 bps will still only produce a set speed automatically reduced to 9600 bps.
NOTE: Selector 8 is applicable only to those models that support 14,400 bps.
•Selectors 1 through 6: First and last choices of transmission speed for fallback
These selectors are used to set the MODEM speed range. With the first transmission speed choice specified by selectors 1 through 3, the equipment attempts to synchronize the data transmission via the MODEM. If the synchronization fails, the equipment automatically steps down to the next lowest speed and attempts to synchronize the data transmission again. The equipment repeats this sequence while stepping down the transmission speed to the last choice specified by selectors 4 through 6.
If the MODEM always falls back to a low transmission speed (e.g., 4,800 bps), set the first transmission speed choice to the lower one (e.g., modify it from 12,000 bps to 7,200 bps) in order to deactivate the
Generally, to save the transmission time, set the last transmission speed choice to a higher one.
V - 32
