CDMA DTU

CM6550P CDMA DTU Technical Specification

CM6550P CDMA DTU adopts high-powered ARM9 CPU and embedded real time operating system. It integrates all the commonly used protocols, such as TCP/IP/UDP and so on, from logical link layer to upper application layer protocols. It provides a secure, high speed, reliable wireless internet connection for customers. It supports several ways that trigger DTU to be online, including SMS and data. Also, it supports double or several data centers. This product has been widely used in finance, water supply, environment protection, electric power system, post and weather fields.

1. CDMA DTU Wireless Specification
Compliant with S-95 A/B and CDMA2000 1xRTT
Support 13K QCELP audio codec

2. CDMA DTU Hardware System
CPU: Industrial ARM9 CPU, 200MPS, MMU, 16KB Dcache, 16KB Icache
FLASH¡º8MB (Extendable to 32MB)
SDRAM¡º64MB (Extendable to 256MB)
Interface:
RS232 serial port ¡«rates:110~230400bits/s
Indicator lights: Power, Communication, Online
Antenna interface: standard SMA female interface, 50 ohm
SIM interface: standard user card interface (3V/5V)
Power interface: standard 3-PIN power jack
Audio interface: standard MIC-phone jack (reserve)

Power supply¡º
Standard power supply: DC 9V 500mA
Power range: DC 5-30V
Size:
Outline dimension: 92.7x61.3x23 mm
Casing dimension: 298*226*64mm
Weight:
680g
Others:
Operation temperature:-25~+65§«C
Storage temperature: -40~+85§«C
Humidity: 95% (unfreezing)

3. CDMA DTU Software function
Support transparent data transfer and protocol conversion. Support several work modes
Support VPDN
Support DDNS and IP access to data center
Support double data centers for backup
Support several data centers
Support several triggering ways, including SMS, audio and data. Support link disconnection when timeouts
Adopt smart online keeping technology to make sure that DTU is always online
Support SMS backup and emergency report
Support RSA and RC4 encryption arithmetic
Support VWM¡§Virtual Man Watch¡¨function
Support hardware and software WDT
Reporting the status of data transfer
Standard AT command interface
Support common MODEM function
Support telnet function
Support remote configure and control
Support console upgrade firmware
Support multi OS, such as WINDOWS, LINUX, SCO UNIX etc.

4. CDMA DTU Application Examples
Connect Ethernet devices to CDMA network
Connect serial devices to CDMA network
Provide Internet access to locations without fixed connections and mobile
Credit card verifications, POS, ATM
Data loggers, PLCs, RTUs, HMIs
Vehicles
Static IP addresses with Viola M2M
Trucks, transportation, vehicles
Road signs and weather stations
And so on