The GSM 4 Click Board™ is a compact quad-band GSM cellular network communication solution, featuring the quad-band 2.5G GSM/GPRS SARA-G350 module. This module features a full set of options for the cellular networking and communication, such as the network status indication, jamming detection, embedded internet protocols, including TCP/IP, UDP, FTP, PPP, HTTP, SMTP, full GPRS multi-slot class 10 implementation, and more. Data communication speed is rated up to 42.8 for the uplink and 85.6 kbps for downlink connection.
This module offers high quality integrated audio interface, allowing voice communication over the onboard 3.5mm headset connector, and the USB connector.