Sim900b Quad-band Gsm/gprs Modules

SIM900B Quad-band GSM/GPRS modules SIMCom presents a  compact and reliable wireless module-SIM900B which is compatible with the module-SIM300/340 and SIM340E.This is a complete  Quad-band GSM/GPRS module is a B2B 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 application, especially for slim and compact demandof 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: 40* 33* 3 mm Weight: 7g Control via AT commands (GSM 07.07 ,07.05 and     SIMCOM enhanced AT Commands) SIM application toolkit Supply voltage range 3.4 ... 4.5 V Low power consumption Normal Operation temperature: -30C to +80 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 features0710 MUX protocolFTP/HTTP(available at July.2010)Specifications for Voice Tricodec  Half rate (HR) Full rate (FR)  Enhanced Full rate (EFR) Hands-free operation Echo suppression  Interface60 PIN Board-to-hoard connectorInterface to external SIM 3V/ 1.8V Two analog audio interfaceRTC backup SPI interface Serial interfaceEmbedded SIM(option)Embedded SIM Holder (option)GPIO PWM ADCAntenna connectorCompatibility AT cellular command interface Approvalson goingCE FCC ROHS PTCRB GCF AT&T ICASA ICTA