ماژول sim900a -ارسال /gprs-sms

این ماژول دقیقا مشابه sim900 می باشد تنها فرق آن در پهنای باند ساپورتی می باشد که sim900a دو پهنای باند ساپورت میکند که در ایران هم فقط از این دو پهنای باند استفاده می شود
توضیحات از سایت سازنده
http://wm.sim.com/Sim/FrontShow/wireless/detail.aspx?pid=40&cid=45&nid=1024
Key Features
* Dual-band 900 / 1800 MHz
* GPRS multi-slot class 10 / 8
* GPRS mobile station class B
* Meet the GSM 2 / 2 standard
- Class 4 (2 W @ 900 MHz)
- Class 1 (1 W @ 1800MHz)
* Size: 24 * 24 * 3mm
* Weight: 3.4g
* Control via AT commands (GSM 07.07, 07.05 and
SIMCOM enhanced AT command set )
* SIM Application Toolkit
* Supply voltage range: 3.1... 4.8V
* Low power consumption: 1.5mA ( sleep mode)
* Operating range: -40 ° C to 85 ° C

Fax
* Group 3, class 1

Data transmission
* GPRS class 10: maximum 85.6 kbps ( downlink rate)
* Support PBCCH
* Coding schemes CS 1, 2, 3, 4
* CSD up to 14.4 kbps
* USSD
* Non- pass through
* PPP-stack

SMS
* Point to Point MO and MT
* SMS broadcasting
* Text and PDU mode

Software Features
* 0710 MUX protocol
* Embedded TCP / UDP protocol
* FTP / HTTP (2010 年 achieved by July )

Enhanced software features
* FOTA (2010 年 achieved by July )
* MMS (2010 年 achieved by July )
* Embedded AT (2010 Q3 can be achieved )

Voice
* Tricodec
- Half rate (HR)
- Full rate (FR)
- Enhanced Full Rate (EFR)
* Support echo cancellation algorithm
* AMR
- Half rate (HR)
- Full rate (FR)


Interface
* Support SIM card 3V / 1.8V Interface
* Analog Audio Interface
* Support for RTC
* SPI Interface
* Serial Interface
* Antenna pad
* I2C
* GPIO
* PWM
* ADC
http://kavirelectronic.com/eshop/product.php?id_product=1200062

ماژول sim900a ، ارسال /gprs ، sms