ماژول gsm/gprs/gps ---- sim548

General features
Quad-Band 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 (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
Restricted operation temperature:
-40°C to -30°C and +80°C to +85°C
Storage temperature:
-45°C to +90°C
Dimensions: 55*33*8.2mm

Interfaces
60-pin DIP connector
Multiplexer
Interface to external SIM 3V/ 1.8V
Dual analog audio interfaces
AT commands via GSM/GPRS serial interface
Embedded SIM card holder
LCD interface
RTC backup
Charge interface
A serial interface and a debug interface for
GSM/GPRS
Dual serial interface for GPS
Two separate antenna connectors for GSM/GPRS&GPS, and two antenna pads for GSM/GPRS&GPS


Compatibility
AT cellular command interface



Specifications for SMS via GSM / GPRS Specification for GPS

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
CSD up to 14.4 kbps
USSD
Non transparent mode
PPP-stack
Integrated TCP/IP stack


Specifications for fax
z Group 3, class 1

Receiver 20 channels, L1 1575.42 MHz,
C/A code 1,023 MHz chip rate
Accuracy Position 10m CEP
without SA/Velocity 0.1m/s,
without SA/Time 1μs synchronized to
GPS time
Date WGS-84
Acquisition rate (TTFF defined at 95% of first position local station)
Hot start