Data Capacity of a Voice Circuit
Fastest rate at which you can send your data over the circuit (in bits per second)
- Calculated as the bit rate: b = s x n
- Depends on modulation (symbol rate)
- Max. Symbol rate = bandwidth (if no noise)
Maximum voice circuit capacity:
- Using QAM with 4 bits per symbol (n = 4)
- Max. voice channel carrier wave frequency: 4000 Hz = max. symbol rate (under perfect conditions)
?Data rate = 4 * 4000 ? 16,000 bps