GPRS point to point and multiple points wireless modem:GPRS 400

GPRS point to point and multiple points wireless modem:GPRS 400
contact:Cenny
 

GPRS400 Overview
  GPRS400 can simultaneously support several communication modes:PTP(point to point).PTMP(point to multiple points),inter to termminals and terminal to center.Through RS232/RS485/RS422 interface,Customer can access to Internet to receive and send data any time anywhere,no matter what complicated network protocol are involved.

  GPRS400 is one wireless data transmission terminal using GPRS.It supports SOCKET standard interface and lots of network protocols such as PPP,TCP,UDP and ICMP.Two transmission modes are provided to customer:one is fully transparent mode and another is user controlled mode.

  GPRS400 support two message format:TCP and UDP,which is decided by customer based on needs.This product already has been widely used in many fields:remote electric power supervision,remote data collection and transmission,water pollution supervision,forest fire-prevention,weather data collection,remote data collection by Environmental protection bureau.It can solve issue of long-distance data collection and transmission without any wiring. GPRS400 can provide you wireless data transmission wherever GPRS network exists.

     GPRS400 product Characteristics
Integrate GPRS and TCP/IP,it can provide flexible wireless network model such as PTP and PTMP.
Embedded industry-level GPRS engine and CPU.It can provide comprehensive network protocol such PPP,ICMP,TCP,UDP and DNS,and also transparent data transmission channel.
Stability of performance,it can work reliably for long time under bad situation.Embedded watchdag circuit is provided
    Support always-on mode.Customer can configure keep-alive interval and keep service always online.When DTU loses connection caused by bad signal or closure of service center,DTU can automatically restore connection when condition permits DTU can ensure 100% user data integrity under any condition (except when DTU is restarted) DTU can work under fully transparent or user controlled mode.
    Support fixed IP or dynamic IP +DNS
Provide RS232/RS485/RS422 communication interface,series of baud rates from 300bps to 115200bps,start/stop bit and parity check.And RTS/CTS flow control.
Provide two-way 100K data receive/send buffer to ensure reliable busty data transmission and receiving.
    Support remote parameter configuration,remote firmware upgrade,and DTU closure by remote control.
    Support remote awaken,by two mode:telephone and short message.
    Support parameter modification by short message.
    Support short message transparent channel.If GPRS network has problem,DTU can send and receive data by short message channel.Customer only need change one parameter to change DTU to fully short message DTU.
    Support double serial and 8 extra 10,and conveniently customize other functions for customers.
    Support electric power down warning notification by some special DTU model which can send ntification to center when it is power down.
Support soft power down function by special models.Customer can let DTU power down when finish data transmission, which can satisfy the customer who has requirement for power consuming.
Embedded FLASH mdmory can preserve configured parameter for long time.
    Support firmware upgrade by serial or remote mode.
    Support firmware upgrade by serial or remote mode.
    Support APN data specialized network service.
Prevent interference to make it work find under bad electromagnetism situation
Wide power range design make it work under different power supply.It support Solar energy power supply.In always on mode,it has lowest current 20Ma(12V DC)compared to similar products.

GPRS400 major technical parameters
Power supply:Standard voltage:12VDC/500Ma,voltage range 7-35VDC.
Power consumption:12VDC,Current when sending/receiving 150mA-240Ma
Frequency range:Double frequency EGSM900/1800M,compatible with GSM Phase 2/2+
GPRS connection:GPRS Class B;coding scheme:CS1-CS4;Downlink data rate max.85.6kbps;uplink data rate max 21.4kbps
Short message:support MT,MO,CB,text and PDU mode
SIM interface:support SIM card,3V
Antenna interface:50ohm antenna connector
Serial interface: RS232/RS485;data rate :300-115200bps;flow control:DTR/DSR;data bit:7 or 8;parity:N/E/O;stop bit:1 or 2 bit
Temperature range :Environment temperature:-25degree to +70degree;Storage temperature:-35degree to +85degree
Humidity range:Relative humidity 95%
Physical characteristics:Size length 90.5mm,width:62.5mm height:23.5mm Weight:190g

I'm Cenny, a sales manager of Bell Data Communication Equipments Co., Ltd , a China local manufacturer .  Our products brand is VeeCOM(LANBEL) .
  Our major products series are:G.703/E1 to V.35 and ethernet Converters/DSL CPE/ADSL SYSTEM/Multiplexers/Bridges/Modems/Switch/E1&T1 equipment/Fiber Equipment/wireless modem/ADSL modem