1. General
GPRS is General Packet Radio Servicebuilt on the basis of GSM network to provide packet data service.It works at the same frequency band, the same modulation and thesame TDMA frame structure with GSM. GPRS can be implemented atexisting GSM BSS by plug-in packet data card and associated updatedsoftware. Therefore, the system coverage is as same as GSM network.GPRS users can transmit and receive data from end to end by packetmodel. Packet data service is highly efficient and low cost forcustomers, for it does not occupy the circuit switched networkresources. In this way, GPRS is a great communication channel forinterrupting and bursting data transmission.
Maximum GPRS bandwidth can reach171.2Kb/s and the actual application is 40~100Kb/s. Provided TCP/IPprotocol connections on the system, GPRS network can be applied onInternet connection and data transmission, etc..
GPRS is a kind of mobile packet dataservice that provides high speed wireless IP connection betweenmobile users and data networks. It is developed with packet switchtechnology; each user can occupy multiple radio channels, at thesame time, one single radio channel can be shared by multipleusers. Thus, radio resources are effectively utilized and themaximum GPRS bandwidth can reach 171.2Kb/s. the GPRS user canremain online all the time, only pay for the data has beentransmitted and received because of this technology.
The GF-2000 GPRS modem developed byBeijing Garefowl New-tech Co., Ltd. it provides mobile users accessto Internet and can be connected directly to personal PC via serialport interface. Co-working with dialup software, the modem canautomatically detect link status and redial if the linkdisconnects. It is a highly reliable link satisfying requirementsof industrial data transmission.
2. GF-2000 GPRSModem Functions
Basic Functions
l Ease to use,reliable and flexible
l Support dualband GSM/GPRS
l Complied withETSI GSM Phase 2+ standard
l SupportA5/1&A5/5 encrypted arithmetic
EnhancedFunctions
l GPRS linkdetection and redial (work with Microsoft dialup software)
l Support dialupcontrol
l Send SMS viaPC
The ultracompact dual-band GF-2000 GPRS Modem has all the right industrystandard interfaces for GPRS Class 8 data, voice, SMS and faxapplications. It can be powered by a wide range of voltages. Abuilt-in SIM card reader makes it easy to plug the GF-2000 GPRSModem into your application. It has full type approval according toR&TTE, GCF as well as approvals for E-marking.
Please Note:The accessories, AC adapter, RS232 cable and GSM antenna will berequired, along with a GSM/GPRS SIM card to operate and use theunit.
3.Features
Dual-bandEGSM900 and GSM1800 Compliant to GSM phase 2/2+ Outputpower:
- Class 4(2W) for EGSM900
- Class 1(1W) for GSM1800 Control via AT commands SIM Application toolkitMultiplex RS232 interface
Supplyvoltage range 8 - 30V
Dimensions:75*50*16mm
Weight150g
Ambienttemperature: -20oC to +55oC
Datatransfer
GPRS Class 8(up to 85.6Kbps)
Full PBCCHsupport GPRS mobile station, class B CSD up to 14.4Kbps USSD Nontransparent mode V.110 Coding scheme CS1, 2, 3, 4
Fax
Group 3, Class1, 2
SMS
Point-to-pointMOand MT SMS cellbroadcast Text and PDU mode
Audio
Half Rate(HR)
Full Rate(FR)
Enhanced FullRate (EFR)
Interfaces
Plug in powersupply
Mini-SIM cardreader
Antennaconnector SMA (male)
Standard serialPort (DB-9)
Operatingstatus LED
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