In the public switched telephone network, your call is set up and switched based on the numbers

Question:

In the public switched telephone network, your call is set up and switched based on the numbers that you dial. These numbers actually provide different frequency sounds or tones to the switching center.What is this signaling called?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question
Question Posted: