August 1999
Intermediate to advanced
328 pages
8h 50m
English
Content preview from Voice Over IP
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V.34
To begin this analysis, Table C-1 is an extraction of several tables in the V.34 Recommendation. (We will be using the 2400 and 3200 symbol rates, and high-carrier throughout this discussion).
The symbol rate is S = (a/c) × 2400 ± 0.01% two-dimensional (2D) symbols per second. Therefore, using Table C-1, the symbol rate of 3200 is derived by (4/3) × 2400 = 3200.
The carrier frequency is C = (d/e) × S. Therefore, using Table C-1 once again, a carrier frequency of 1800 is derived by (3/4) × 2400 = 1800. A carrier frequency of 1920 is derived by (3/5) × 3200 = 1920.
| ----High Carrier---- | Framing Parameter | ||||||
|---|---|---|---|---|---|---|---|
| Symbol Rate,S | a | c | Frequency | d | e | J | P |
| 2400 | 1 | 1 | 1800 | 3 | 4 | 7 | 12 |
| 3200 | 4 | 3 | 1920 | 3 | 5 | 7 | 16 |
| (Note: Partial examples, see ... | |||||||
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