What is the purpose of GSM modem?

What is the purpose of GSM modem?

A GSM modem or GSM module is a hardware device that uses GSM mobile telephone technology to provide a data link to a remote network. From the view of the mobile phone network, they are essentially identical to an ordinary mobile phone, including the need for a SIM to identify themselves to the network.

How can I test my GSM modem?

Manually send an SMS text message

1. Open PuTTY.
2. Select Session in the navigation bar to the left.
3. In Connection type, select Serial.
4. In Serial line, enter the COM port your modem is connected to.
5. In Speed, enter the maximum port speed (baud rate) of your modem.

How can I check GSM?

How to tell if your phone is GSM or CDMA

1. If you bought your phone from Sprint or Verizon, then it is probably a CDMA phone.
2. If you bought it from AT or T-Mobile, it’s probably GSM.
3. Check your phone’s About settings.
4. Look up your phone’s model number online.

What can I do with a GSM modem?

In addition to the standard AT commands, GSM modems support an extended set of AT commands. These extended AT commands are defined in the GSM standards. With the extended AT commands, you can do things like: Reading, writing and deleting SMS messages. Sending SMS messages. Monitoring the signal strength.

What kind of modem do I need for Arduino?

We are using SIM900A GSM Modem for this tutorial. Connecting GSM modem with arduino is very simple just connect RX Line of Arduino to TX Line of GSM Modem and vice versa TX of arduino to Rx of GSM modem. Make sure use TTL RX, TX lines of GSM modem.

How is a GSM modem different from a dial up modem?

What is a GSM Modem? A GSM modem is a wireless modem that works with a GSM wireless network. A wireless modem behaves like a dial-up modem. The main difference between them is that a dial-up modem sends and receives data through a fixed telephone line while a wireless modem sends and receives data through radio waves.

What to look for in a GSM module?

When you are buying GSM module for development boards like Arduino or Raspberry Pi or for controllers like 8051, AVR or PIC – the very first thing you should look for in a GSM module is TTL based Serial Input and Serial Output. There should be a +5V, a GND, Serial In (usually marked Rx or RxD) and Serial Out (usually marked Tx or TxD).