Global System for Mobile Communication (GSM) modem is a specialized type of modem that operates over paid subscription bases to an instant network, exactly like a mobile phone. It accepts a Subscriber Identity Module (SIM) and actually performs like a cell phone for computers. This kind of modem can be used as a separate mobile phone that the computer can use for GSM network capabilities. Traditional modem is attached with computers allowing dial-up connection to other remote computer systems. Additionally, it functions in a quite similar manner, having an exception that it sends and receives data through radio waves in place of a telephone wire. This type can be an external device connected via a USB (Universal Serial Bus) cable or perhaps a serial cable. Commonly it is really 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 a communication device like its ancestors having wires, but since the service is on paid subscription bases, it should have installed a SIM card. This card can connect the modem to the appropriate supplier and identifies the device user to its carrier network. This way, it functions almost like a cell phone; as a matter of fact, many cellular phones make use of SIM cards for the said purpose. The SIM cards actually contain all the consumer 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 over 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 utilizing GSM technology so that they’ll work as wireless hotspot for computer when required. They are able to easily get in touch to the computer via USB cable or even with no wire over a wide-fidelity (Wi-Fi) network and also via Bluetooth. This enables user to access the Internet service using their cell phone working as a GSM modem instead of a normal Wi-Fi connection. All the users who’ve an unlimited data package on the smart phone, this can be a cheaper solution than paying extra for a different Access to the internet, or paying money as a connection fee or a membership for a public Wi-Fi hotspot.

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