1, the telephone line is broken.
These games are all broken.
3. There is something wrong with the phone.
4, the telephone line is not broken, and the machine is not broken, which is the problem of the telecom company.
5. The line is busy.
Landline (fixed telephone) generally refers to fixed telephone.
Fixed telephone, commonly known as landline, refers to the telephone fixed in a certain position, which is different from mobile phone (mobile phone) and is mostly used in enterprises.
Telecommunication development history
From The Prince of Zhou Youwang's War Drama to Bamboo Slips, from The Drifting Bottle to the first telegram in human history-"What miracle did God create", communication technology has developed rapidly with the help of modern science and technology in the past hundred years. Let's go back and see the scenery along the way.
According to the research, people in the Shang and Zhou Dynasties in ancient China knew that bonfires were used to transmit information over a long distance. The most familiar story is "Bomei people laugh, and Zhou Youwang is a vassal in a bonfire".
The book "One Hundred Years of Telephone" published by the International Telecommunication Union mentioned that in 968 AD, people in China invented something called "Bamboo Letter", which was regarded as the embryonic form of telephone. Although these stories reflect the wisdom of our ancestors, we still need to understand the development history of modern telecommunications technology from Europe.