Parameter # | Description | Units |
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54 | PSTN dial tone frequency 2. Center frequency for the second | 1 Hz (0 Hz |
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| PSTN dial tone. |
| to 1200 Hz) |
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| Country |
| Default |
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| United States | 440 |
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| Australia |
| 0 |
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| France |
| 510 |
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| Germany |
| 435 |
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| Netherlands | 415 |
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| United Kingdom | 355 |
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| India |
| 440 |
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| Korea |
| 440 |
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| China |
| 440 |
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55 | PSTN dial tone frequency 3. Center frequency for the third | 1 Hz (0 Hz |
| the | ||
| PSTN dial tone. |
| to 1200 Hz) |
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| Country |
| Default |
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| United States | 0 |
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| Australia |
| 0 |
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| France |
| 370 |
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| Germany |
| 460 |
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| Netherlands | 475 |
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| United Kingdom | 0 |
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| India |
| 0 |
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| Korea |
| 0 |
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| China |
| 0 |
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| the | ||
56 | PSTN dial tone frequency 4. Center frequency for the fourth | 1 Hz (0 Hz |
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| PSTN dial tone. |
| to 1200 Hz) |
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| Country |
| Default |
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| United States | 0 |
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| Australia |
| 0 |
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| France |
| 300 |
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| Germany |
| 0 |
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| Netherlands | 535 |
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| United Kingdom | 0 |
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| India |
| 0 |
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| Korea |
| 0 |
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| China |
| 0 |
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57 | Special dial tone detect. Indicates the frequency combination0=o freq. used to | |||||
| identify a special dial tone. | 1=1 |
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| Country |
| Default | 2=2 |
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| United States | 0 | 3=1&2 |
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| Australia |
| 0 | 5=1or2 |
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| France |
| 13 | 6=1&2or3&4 |
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| Germany |
| 0 | 7=1or2or3&4 |
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| Netherlands | 0 | 8=1&2or3or4 |
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| United Kingdom | 1 | 9=1or2or3or4 |
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| India |
| 0 | 10=1&2&3&4 |
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| Korea |
| 0 | 11=1or2&3&4 |
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| China |
| 0 | 12=1&2&3or4 |
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| 13=1or2&3or4 |
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| 14=1or2or3 |
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