SIMCom presents an ultra compact and reliable wireless module—SIM900-DS with special features, Dual-SIM DualStandby, which allows customers to use two SIM cards in one device simultaneously. This is a complete Quadband GSM/GPRS module with a SMT type and designed with a very powerful single-chip processor integrating ARM926EJ-S core, allowing you to benefit from small dimensions and cost-effective solutions. Featuring an industry-standard interface, SIM900-DS 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 24*24*3 mm same as SIM900, it can fit almost all the space requirements in your M2M applications, especially for slim and compact demands of design.

SIMCOM SIM900-DS Technical Specifications:

* 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)

* SAIC (Single Antenna Interference Cancellation) support

* 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 : 3.2~4.8V

* Low power consumption: 1.5mA(sleep mode& BS-PAMFRMS=9 )

* Operation temperature: -40 ℃ to +85 ℃

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

* MMS

* E-MAIL

* DTMF

* NETSCAN

* JD

* SSL

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

* SIM Card Interfaces (Dual Standby)
—SIM card 1: 3V/ 1.8V
—SIM card 2: 3V/ 1.8V

* Analog audio interface

* RTC backup

* SPI interface

* Serial interface

* Antenna pad

* PCM

* I2C

* GPIO

* ADC

Compatibility

* AT cellular command interface