Wireless router is like an extended product that combines simple wireless AP and broadband router. It not only has all the functions of simple wireless AP, such as supporting DHCP client, VPN, firewall, WEP encryption and so on, but also includes the function of network address translation (NAT), which can support the network connection sharing of LAN users. It can realize the Internet connection sharing in the home wireless network, and realize the wireless shared access of ADSL, cable modem and community broadband. The wireless router can be directly connected with all ADSL modems or cable modems connected with Ethernet, or can be re connected through LAN such as switch / hub, broadband router, etc. It has a simple virtual dialing software built-in, which can store the user name and password to dial the Internet. It can provide automatic dialing function for ADSL, cm and so on, without manual dialing or occupying a computer as a server. In addition, wireless routers generally have more perfect security protection functions.
3G router mainly embeds wireless 3G module in the original router. First of all, users can use a USIM card to plug in 3G router, and connect to the network through 3G network WCDMA, TD-SCDMA, etc. The router has WiFi function to share the Internet. As long as the mobile phone, computer and PSP have wireless network card or WiFi function, they can access the Internet through 3G wireless router, which provides great convenience for WLAN to share 3G wireless network. Some manufacturers also have wired broadband interface, which can access the Internet without 3G. Through 3G wireless router, broadband connection can be realized, which can reach or exceed the network bandwidth of current ADSL. It has become very widely used in Internet and other applications.
