SMSServer needs to be attached to a serial or a USB GSM Modem or mobile phone in order to send and receive SMS. Modems must support following AT+ commands to be fully compatible with SMSServer:

• AT - Establish connection with modem;
• AT+CPIN - Pin code setup;
• AT+CMGF - Text Mode setup;
• AT+CSQ - Signal level request;
• AT+CMGS - Send an SMS;
• AT+CPMS - Setup SMS Storage on phone memory (for ACK SMSs);
• AT+CMGR - Read an SMS from memory (for ACK SMSs);
• AT+CMGD - Delete an SMS from memory (for ACK SMSs).

In case you need it, it is now possible from this website to purchase a modem 100% tested and compatible with SMSServer. Modem models are Gemalto EHS6T-USB and Cinterion PLS62T-W USB, you can find informations, startup guide and technical details on the download section of this website.

Here's a short list of modems tested with SMSServer and available on the market:

• TELTONIKA TRM240 - LTE / 3G / 2G;
• CINTERION PLS62T-W USB - LTE / 3G / 2G
  
• GEMALTO EHS6T-USB - 3G Five Band + 2G Quad Band;
• Cinterion MC55i - 2G Quad Band;
• Cinterion TC35i - 2G Dual Band;

If you are using a modem with SMSServer, please help us creating a compatibility list filling this module.
Your help will be appreciated.