Any phone that supports the “extended AT command set” for sending/receiving SMS messages, as defined in ETSI GSM 07.05 and/or 3GPP TS 27.005, can be supported by the Now SMS & MMS Gateway. (Other manufacturers of dedicated GSM modem devices include Wavecom, Multitech and iTegno.) To begin, insert a GSM SIM card into the modem and connect it to an available USB port on your computer.Ī GSM modem could also be a standard GSM mobile phone with the appropriate cable and software driver to connect to a serial port or USB port on your computer. In most parts of the world, GSM modems are a cost effective solution for receiving SMS messages, because the sender is paying for the message delivery.Ī new version of NowSMS is available that supports the ability to use Android phones as GSM modem devices for both sending and receiving SMS and MMS messages.Ĭlick here to download a free 30-day trial version of NowSMS or NowSMS Lite.Ī GSM modem can be a dedicated modem device with a serial, USB or Bluetooth connection, such as the Falcom Samba 75 used in this document. GSM modems can be a quick and efficient way to get started with SMS, because a special subscription to an SMS service provider is not required. To perform these tasks, a GSM modem must support an “extended AT command set” for sending/receiving SMS messages, as defined in the ETSI GSM 07.05 and and 3GPP TS 27.005 specifications. The mobile operator charges for this message sending and receiving as if it was performed directly on a mobile phone.

From the mobile operator perspective, a GSM modem looks just like a mobile phone.įor the purpose of this document, the term GSM modem is used as a generic term to refer to any modem that supports one or more of the protocols in the GSM evolutionary family, including the 2.5G technologies GPRS and EDGE, as well as the 3G technologies WCDMA, UMTS, HSDPA and HSUPA.Ī GSM modem exposes an interface that allows applications such as NowSMS to send and receive messages over the modem interface. A GSM modem is a specialized type of modem which accepts a SIM card, and operates over a subscription to a mobile operator, just like a mobile phone.

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