Global System for Mobile Communication (GSM) modem is a specialized kind of modem that operates over paid subscription bases to a wireless network, exactly like a mobile phone. It accepts a Subscriber Identity Module (SIM) and actually performs like a cellular phone for computers. This type of modem can be used as a separate cell phone that the computer can use for GSM network capabilities. Traditional modem is attached to computers allowing dial-up link with other remote computer systems. It also functions in a quite similar manner, having an exception so it sends and receives data through radio waves rather than a telephone wire. This type is an external device connected via a USB (Universal Serial Bus) cable or a serial cable. Commonly it is just a mini device which can be plugged straight into the USB port or card slot of a PC or even a laptop.
sim gia re
It is really a communication device like its ancestors having wires, but since the service is on paid subscription bases, it will have installed a SIM card. This card can connect the modem to the proper supplier and identifies the device user to its carrier network. This way, it functions almost like a cellular phone; as a matter of fact, many mobile phones make use of SIM cards for the said purpose. The SIM cards actually contain all the user data like subscription, membership and caller’s logs etc. these SIM cards are often inter-changeable among GSM modems and GSM cell phones. Similarly dial-up modem converts analog signals to digital and vice versa, GSM modems convert digital data to SMS (Short Message Service) message for sending or receiving message on the wireless phone network. SMS messages are small packets of electric data which is sent and received just like the information packets on dial-up modem.
GSM Cellular Modem
Several new brands of third-generation (3G) and fourth-generation (4G) expensive smart phones are employing GSM technology so that they may act as wireless hotspot for computer when required. They are able to easily link to the computer via USB cable as well as without a wire over a wide-fidelity (Wi-Fi) network and also via Bluetooth. This enables user to gain access to the Websites utilizing their mobile phone working as a GSM modem rather than a normal Wi-Fi connection. All of the users who have an unlimited data package on their mobile phone, this is a cheaper solution than paying extra for another Access to the internet, or paying money as a connection fee or perhaps a membership for a public Wi-Fi hotspot.