... and reliable wireless module. The SIM900 Quad-band GSM/GPRS module is part of SIMCom’s new ... interface, the SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data, and Fax in ... 3 mm - Weight: 7g - Control via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands) - ... - PPP-stack Specifications for SMS via GSM/GPRS - Point to point MO and MT - SMS cell broadcast - Text and ...