Question

The bandwidth sufficient for commercial telephonic communication:

Answer 1

1. Bandwidth is described as the range of frequencies required.
2. For a commercial telephonic communication, a frequency range of $300-3100Hz$ is accepted.
3. This bandwidth ensures that the voice quality is acceptable when reproduced at the receiving end.
4. It is also economically viable.

Therefore, the bandwidth sufficient for commercial telephonic communication is $300-3100Hz$.