Global System for Mobile Communication (GSM) modem is really a specialized type 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 mobile phone for computers. Such a modem can be used as a dedicated cellular phone that the computer can use for GSM network capabilities. Traditional modem is attached to computers allowing dial-up connection to other remote computer systems. It also functions in a quite similar manner, with an exception that it sends and receives data through radio waves rather than a telephone wire. This kind is an external device connected with a USB (Universal Serial Bus) cable or a serial cable. Commonly it is a mini device that can be plugged straight into the USB port or card slot of a PC or a laptop.
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It is just a communication device like its ancestors having wires, but whilst the service is on paid subscription bases, it should have installed a SIM card. This card can connect the modem to the proper service provider and identifies the device user to its carrier network. In this manner, it functions almost like a cell phone; as a matter of fact, many cellular phones take advantage 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 usually 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 can be sent and received just like the data 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’ll are wireless hotspot for computer when required. They can easily be connected to the computer via USB cable as well as with no wire over a wide-fidelity (Wi-Fi) network and also via Bluetooth. This enables user to access the Websites employing their smart phone working as a GSM modem instead of a normal Wi-Fi connection. All the users who’ve an unlimited data package on their mobile phone, this is a cheaper solution than paying extra for a different Access to the internet, or paying money as a link fee or even a membership for a public Wi-Fi hotspot.