How where phons use in march 1879?

Answer 1

wasnt none

Answer 2

In March 1879, telephones were primarily used for communication between two parties over a wired network. The technology was still in its early stages, and most telephones were limited to local or regional connections. Alexander Graham Bell had received the patent for the telephone in 1876, so by 1879, the technology was gradually being implemented for commercial and personal use.