SIM900A GSM Module

Description

Overview

• The SIM900A is a readily available GSM/GPRS module, used in many mobile phones and PDA.
• The module can also be used for developing IOT (Internet of Things) and Embedded Applications.
• SIM900A is a dual-band GSM/GPRS engine that works on frequencies EGSM 900MHz and DCS 1800MHz.

Specification 

• Supply voltage range : 3.2 … 4.8V
• •Low power consumption: 1.0mA(sleep mode&BS-PAMFRMS=9 )
• •Operation temperature: -40°C to +85 °C
• Class 4 (2 W @850/ 900 MHz)
• Class 1 (1 W @ 1800/1900MHz)
• •SAIC (Single Antenna Interference Cancellation)
• Quad-Band 850/ 900/ 1800/ 1900 MHz
• GPRS multi-slot class 10/8
• GPRS mobile station class B
• Compliant to GSM phase 2/2+
• Control via AT commands (GSM 07.07 ,07.05  and SIMCOM enhanced AT Commands)
• SIM application toolkit

Specifications for SMS via GSM/GPRS

• Point to point MO and MT
• SMS cell broadcast
• Text and PDU mode

Software features

• 0710 MUX protocol
• Embedded TCP/UDP protocol
• FTP/HTTP

Special firmware

• Embedded AT
• Java 
• FOTA
• MMS

Specifications for Voice

• Tricodec

– Half rate (HR)

– Full rate (FR)

– Enhanced Full rate (EFR)

• AMR

– Half rate (HR)

– Full rate (FR)

• Hands-free operation

（Echo suppression）