SIM928 module is a compact Quad-Band GSM/GPRS-enable module base on PNX4851 platform
which is also equipped with GPS technology for satellite navigation. The complete design in a SMT
type makes it easy to integrate GSM/GPRS&GPS as an all-in-one solution.

General features
?Quad-Band GSM 850/900/18001900MHz
?GPRS multi-slot class 10
?GPRS mobile station class B
?Compliant to GSM phase 2/2+
-Class 4 (2 W @ 850/900 MHz)
-Class 1 (1 W @ 1800/1900MHz)
?Control via AT commands (3GPP TS 27.007 and SIMCom enhanced AT Commands)
?SIM application toolkit
?Supply voltage range:
-GPRS: 3.2 ~ 4.8 V
-V-GPS: 2.8 ~ 4.3V
-VCHG: 5V
?Low power consumption
?Dimensions: 30*30*3.0mm
?Weight: 5.3g
?Operation temperature:-40℃ to +85 ℃

Specifications for SMS via GSM / GPRS
?Point-to-point MO and MT
?SMS cell broadcast
?Text and PDU mode

Specifications for audio
?Tricodec
   -Half rate (HR)
   -Full rate (FR)
   -Enhanced Full rate (EFR)
?Hands-free operation
?Echo cancellation

Specifications for data transfer
?GPRS class 8/10: max. 85.6 kbps (downlink)
?PBCCH support
?Coding schemes CS 1, 2, 3, 4
?PPP-stack
?Integrated TCP/IP stack

Specifications for CSD data
?CSD up to 14.4 kbps
?USSD
?Non transparent mode

Compatibility
?AT cellular command interface

Specification for GPS
? Support EASYTM self-generated orbit prediction
? Support EPOTM orbit prediction
? Support SBAS ranging (WAAS, EGNOS, GAGAN, MSAS)
? Support Jamming Removing
? Integrated Low-noise amplifier
? Receiver type 33tracking/99 acquisition-channel GPS receiver
? Max. update rate: 10Hz
? Sensitivity1
   Tracking: -167 dBm
   Reacquisition: -157 dBm
   Cold starts: -148 dBm
? Time-To-First-Fix1,2
   Cold start: 28s
   Warm start: 26s
   Hot start: <1s
   EPO Assist: 13s(CTTFF)
? Accuracy
   Automatic Position3: <2.5m CEP
   Speed4: 0.1m/s

 Interfaces
? 80-pad with SMT type
? one Interface for external SIM card :3V/ 1.8V
?two analog audio interfaces
?SPI interface
?RTC backup
?A serial interface and a debug interface for GSM/GPRS
? two serial interfaces for GPS
? charge input