How do cable lines on telephone poles transmit and receive data along thousands of houses and not get interference?

Question

How do cable lines on telephone poles transmit and receive data along thousands of houses and not get interference?

In: Engineering

Answer 1

They can and do. Especially with the old analog lines. Now there is a lot more digital lines. Over the digital, the interference is ignored. But over analog some times you can hear someone else’s convo. Also, a strong enough radio signal can go over the phone line and be heard. For instance, a ham operator may be heard in a near by home over the phone when transmitting.