simcom900 gprs wireless module

simcom GSM GPRS module sim900:
SIMCom presents an ultra compact and reliable wireless module-SIM900. This is a complete Quad-band GSM/GPRS module in a SMT type and designed with a very powerful single-chip processor integrating AMR926EJ-S core, allowing you to benefit from small dimensions and cost-effective solutions.   Featuring an industry-standard interface, the SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data, and Fax in a small form factor and with low power consumption. With a tiny configuration of 24mm x 24mm x 3 mm, SIM900 can fit almost all the space requirements in your M2M applications, especially for slim and compact demands of design.   General features
* Quad-Band 850/ 900/ 1800/ 1900 MHz
* GPRS multi-slot class 10/8
* GPRS mobile station class B
* Compliant to GSM phase 2/2+
  – Class 4 (2 W @850/ 900 MHz)
  – Class 1 (1 W @ 1800/1900MHz)
* Dimensions: 24mm x 24mm x 3mm
* Weight: 3.4g
* Control via AT commands (GSM 07.07 ,07.05 and  
  SIMCOM enhanced AT Commands)
* SIM application toolkit
* Supply voltage range : 3.1 ... 4.8V
* Low power consumption: 1.5mA(sleep mode)
* Operation temperature: -40°C to +85 °C    Specifications for Fax
* Group 3, class 1   Specifications for Data
* GPRS class 10: max. 85.6 kbps (downlink)
* PBCCH support
* Coding schemes CS 1, 2, 3, 4
* CSD up to 14.4 kbps
* USSD
* Non transparent mode
* PPP-stack   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( available at late July ,2010)
* FOTA ( available at July ,2010)
* MMS (available at July ,2010)
* Embedded AT (available at Q3,2010)   Specifications for Voice
* Tricodec
  – Half rate (HR)
  – Full rate (FR)
  – Enhanced Full rate (EFR)
* Hands-free operation
  (Echo suppression)
* AMR
  – Half rate (HR)
  – Full rate (FR)   Interfaces
* Interface to external SIM 3V/ 1.8V
* analog audio interface
* RTC backup
* SPI interface (option)
* Serial interface
* Antenna pad
* I2C
* GPIO
* PWM
* ADC   Compatibility
* AT cellular command interface   Certificates:
* CE
* FCC
* ROHS
* PTCRB
* GCF
* IC
* ICASA
* TA
* REACH * AT&T