SIMCom presents a compact and reliable wireless module-SIM900S which is compatible with the module-SIM300. This is a complete Dual-band GSM/GPRS module in 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. The target market of SIM900S is China mainland and India.
SIM900S delivers GSM/GPRS 900/1800MHz performance for voice, SMS, Data, and Fax in a small form factor and with low power consumption. The leading features of SIM900S make it ideal for applications such as WLL applications and handheld devices.

General features

* Dual-Band 900/ 1800MHz
* 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: 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 :3.2 ... 4.8V
* Low power consumption: 1.0mA(sleep mode)
* Operation temperature: -20 °C to +60 °C

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
* CSD up to 14.4 kbps
* 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

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
* 60 PIN Board-to-board connector
* Two analog audio interface
* RTC backup
* SPI interface
* UART interface
* SIM Interface
- Option1: SIM holder (to external SIM 3V/ 1.8V)
- Option2: Embeded SIM
* Keypad
* GPIO
* PWM
* ADC
* Antenna connector

Compatibility
* AT cellular command interface

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We are a highly experienced telecommunications network support provider, specialising in the supply and ongoing support of legacy equipment with warehouses located in the China,HongKong and UK stocking over 100,000 items.

Our management team have over 20 years combined experience within the carrier telecoms industry that has helped to develop and refine each of our core services: spare part supply, repair and refurbishment, asset management and network support.

By partnering with carriers and end-users to acquire, redeploy, resell and recycle their telecommunication assets, we offer services that not only extend the life of existing telecommunication networks, but generate maximum revenue, reduce expenses and help organisations meet their environmental goals.

Our clients range from large-scale multinational organisations and fixed and mobile operators, to leading equipment manufacturers and various other channel partners that are located all around the world.