Simcom SIM900 GSM Module

Model Number: GSM Module Brand Name: GFS Key Specifications/Special Features: General featuresQuad-Band 850/ 900/ 1800/ 1900 MHzGPRS multi-slot class 10/8GPRS mobile station class BCompliant to GSM phase 2/2+– Class 4 (2 W @850/ 900 MHz)– Class 1 (1 W @ 1800/1900MHz)SAIC (single antennainterference cancellation) supportDimensions: 24* 24 * 3 mmWeight: 3.4gControl via AT commands (GSM 07.07, 07.05 andSIMCOM enhanced AT Commands)
SIM application toolkit
Supply voltage range: 3.2 4.8V
Low power consumption: 1.0mA (sleep mode & BS-PAMFRMS=9 )
Operation temperature: -40°C to +85 °C

Specifications for fax
Group 3, class 1

Specifications for GPRS data
GPRS class 10: max. 85.6 kbps (downlink)
PBCCH support
Coding schemes CS 1, 2, 3, 4
PPP-stack

Specifications for CSD data
USSD
Non transparent mode

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 (cooperate with Iasolution)
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)

Interfaces
Interface to external SIM 3V/1.8V
Analog audio interface
RTC backup
SPI interface (option)
Serial interface
Antenna pad
I2C
GPIO
PWM
ADC