Global System for Mobile Communication (GSM) modem is just a specialized type of modem that operates over paid subscription bases to an instant network, exactly such as for instance 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 passionate cell phone that the computer may use for GSM network capabilities. Traditional modem is mounted on computers allowing dial-up connection to other remote computer systems. In addition it functions in a quite similar manner, having an exception that it sends and receives data through radio waves instead of a telephone wire. This type is an external device connected with a USB (Universal Serial Bus) cable or even a serial cable. Commonly it is just a mini device that can be plugged into the USB port or card slot of a PC or even a laptop.
It is really a communication device like its ancestors having wires, but as the service is on paid subscription bases, it should have installed a SIM card. This card can connect the modem to the correct supplier and identifies the unit user to its carrier network. This way, it functions almost like a cellular phone; as a matter of fact, many cell 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 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 over the wireless phone network. SMS messages are small packets of electric data which is 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 utilizing GSM technology so that they can act as wireless hotspot for computer when required. They can easily link 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 get into the Websites employing their smart phone working as a GSM modem as opposed to a normal Wi-Fi connection. All of the users who’ve an unlimited data package on the smart phone, this can be a cheaper solution than paying extra for a different Internet access, or paying money as an association fee or even a membership for a public Wi-Fi hotspot.