Specification :

Product Description

SIMCom presents an ultra compact and reliable wireless module. The SIM900 Quad-band GSM/ GPRS module is part of SIMCom’ s new Surface Mount Technology ( SMT) series, 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 demand
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: 24* 24 * 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: -30 ° C 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

Drivers
- MUX Driver

Specifications for Voice
- Tricodec
– Half rate ( HR)
– Full rate ( FR)
– Enhanced Full rate ( EFR)
- Hands-free operation
 Echo suppression

Interface
- 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

Approvals planning
- CE
- FCC
- ROHS
- PTCRB
- GCF
- AT& T
- ICASA