1 Mechanical Specifacations:
Network specifacation:
l Support GSM/GPRS
l Support GPRS Class12,850/900/1800/1900MHz opptional
l Transmission rate: 300bps-115200bps
l Modulation Mold:GPRS-GMSK
l Frequency Band interval：200KHz
l Coding scheme：CS1-CS4
l Compliant with SMG31bis techonical standard
2 Function Features
l Highly intergreated with GPRS and TCP/IP technical,can achieve Point to Point( MT/MO),Point to Multipoint etc.nimble wireless network mode
l Embedded with CPU can acchieve complicated network protocol,support PPP,ICMP,TCP,UDP,DNS protocol,offer transparent transmission channel for user data
l Stable function guarantees long steady work in outdoors bad envionment,embedded softdog circuit
l Support permanent on-line mode,user can customize heartbeat packet pattern and time interval to keep communication line working
l DTU can automotive connect once again after network problem or central part shuting down
l Support RS485 and RS232 connect in the same time
l DTU can guarantee data transmission quality in tranparent transmission mode
l DTU working in the state of transparent and user instruct mode to operate and maintain easily
l Support center in the fixed IP station or non-fixed IP+ mode
l Support RS232 interface,support rate from 300bps-115200bps, data statation /non-working station / Parity station/ocurrent control opptional
l Support long-distant argument configure and visit
l Support remote awaken
l Embedded with Flash card ,can keep the user argument configure for a long time
l Support RS232 firmware to upgrate
l Support APN data sepcial network affair
l Anti- interfere design suits application in electromagnetism ect.bad environment
3 Enhanced Functions
Industral design,need all kinds of bad environmental requirement
l Select Industral device,wide-range working voltage, avert opposite connection design
l Use WAVECOM GPRS wirelss Module
l Embedded Multi-work operation seystem
l Standard PPP, TCP/IP,UDP/IP protocol
l Independent developed DDP protocol,garantee data route work smoothly
Multi-mission working mode
l Permanent on-line mode: support automotive in on-line once connect power,automotive connect after shutdown,ensure data transmite promptly
l detonate on-line mode: in standby station,data flow/voice/message can detonate equipment on-line
l PCL controled on-line mode: developing TDP protocol to control DTU station by PCL through sending machine instruct
l Customorize on-line again interval：in state of network or central part problem ,can customorize a fixed time interval to connect central part by redailing again after ppp failure dial
Support multilateral communication
l Channel working modes independent and can be free definited: each channel communication mode can be definited as GPRS or SMS mode
l Support main and standby channel working mode:support automotive shift to the standby message channel transmission mode in a station of the main GPRS network shutdown
l Support Multi-central working mode: max support to connect four centrals at the same time
Nimble data transmission mode
l Support TCP/IP,UDP/IP,DDP,SMS,AT etc.kinds of communication mode
l Self- definite transparent communication transmission mode or Protocol transmission mode
l Self-definite heartbeat packet pattern
l Self-definite time interval of on-line packet
l Self-definite time interval of finnal idle packet
l Self-definite network monitor time interval
Argument configure and Remote management
l Embedded Visualization self-check rocedures in power-on dail station to exclude breakdown easily
l Including chinese /English Argument configure interface and inquiring menu
l Support remote Argument configure for data central server and mobile phone message
l User can definite TDP protocol pattern
l Support AT command Argument configure
Complete powerful data central brace system
l function development packet is convenient for user to do secondary development
l OFFer complete chinese and English DEMO VB and VC
l Offer complete data central service program
l Powerful data central test program function
l Completely Compliant with Domestic major configuration softwera
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