What's the difference between IP telephone landlines and ordinary landlines?

Nowadays, IP phone is a familiar term. Compared with the traditional telephone, the biggest advantage of the so-called IP telephone is to make full use of the existing telephone line and use the ubiquitous Internet for voice transmission, thus greatly reducing the call cost, so it is deeply welcomed and respected by users.

Before we know about IP phones, let's explain what IP means. IP is the abbreviation of English Internet Protocol, and its Chinese name is "network protocol". It is the basic protocol for data exchange between different computers on the Internet, in other words, it is the main bridge for "communication" between different computers on the Internet. Knowing this, it is not difficult for everyone to understand that IP phone is actually a communication network that transmits voice information in real time through TCP/IP protocol and realizes mutual communication between people.