The walkie-talkie can talk without any network support, and there is no telephone charge, which is suitable for relatively fixed and frequent calls. There are three kinds of walkie-talkies: analog walkie-talkies, digital walkie-talkies and IP walkie-talkies.
The walkie-talkie covers a wide range. Here, we call all radio communication equipment working in ultrashort wave frequency band (VHF 30 ~ 300 MHz, UHF 300 ~ 300mhz) radio interphone, in fact, it should be called ultrashort wave FM radiotelephone according to relevant national standards.