Sim900a Dual-band Gsm/gprs Module By Shenzhen Haoze Technology Co., Ltd.

SIM900A Dual-band GSM/GPRS module SIMCom presents an ultra compact and reliable wireless module. The SIM900A is a complete Dual-band GSM/GPRS module in a SMT type which is designed specially for Chinese market, allowing you to benefit from small dimensions and cost-effective solutions. Featuring an industry-standard interface, the SIM900A delivers GSM/GPRS 900/1800MHz 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, SIM900A can fit almost all the space requirements in your applications, especially for slim and compact demand of design.   General features * Dual-Band 900/ 1800 MHz* GPRS multi-slot class 10/8* GPRS mobile station class B* Compliant to GSM phase 2/2+  Class 4 (2 W @900 MHz)  Class 1 (1 W @ 1800MHz)* Dimensions: 24*24*3 mm* 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: -40C 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 July ,2010)   Enhanced version add following features* 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* Two Serial interfaces * Antenna pad* I2C* GPIO* PWM* ADC   Compatibility* AT cellular command interface   Certificates:* ROHS* TA* REACH