Data terminal Unit

1. Data Terminal Unit General GPRS is a kind of mobile packet data service that provides high speed wireless IP connection between mobile users and data network. It is developed with packet switch technology; each user can occupy multiple radio channels, at the same time, one single radio channel can be shared by multiple users. Thus, radio resources are effectively utilized and the maximum GPRS bandwidth can reach 171.2Kb/s. Remaining online all the time, users pay merely for the data transmitted and received because of this technology. H7000 Mobile Data System developed by Hongdian Technologies provides a high speed, always online, transparent virtual lease line between remote site and central network. The main application areas are focused on power supply and industry supervision, traffic control, securities, finance, utilities and so on. With the transparent data transmission feature and variety of applications, H7000 system can be configured as a virtual private network. H7000 GPRS mobile data communication system consists of: a) H7118 DTU: RS232/485/TTL interface, high performance, supports GPRS or EDGE b) H7710 DTU: RS232/422/485/TTL interface, common platform, supports 1x network c) H7708/H7709 is public-platform-based and embedded wireless DDNData Termination UnitsupportRS-232/422/485/TTL interface, support GPRS or CDMA1x network DTU = Data Termination Unit 2. H7118 Series DTU Features 1) Basic Functions Ease to use, reliable and flexible Support dual band GSM/GPRS Complied with ETSI GSM Phase 2+ standard Always online Support A5/1&A5/5 encrypted arithmetic 2) Enhanced Functions Transparent data transmission Support virtual private data network Point to point, point to multipoint, center to multipoint data transmission SMS backup channel (option) STK card configuration RS-232/422/485 or Ethernet interface Voice interface System configuration and maintenance interface System upgrade by Xmodem protocol Support web-based configuration Self-diagnostic and alarm output EMC/EMI design Reserved resources for developer 3. H7118 Series DTU Specifications 1) Voice Voice and Emergence Call Full rate, Enhanced full rate and half rate Echo canceller and noise suppression (option) Support DTMF signaling 2) Data GPRS Class 2 10 Code plan: CS1 CS4 Complied with SMG31bis specifications 3) Interface Antenna: 50ohm/SMA/Female SIM card: 3V Serial data interface TTL; RS-232 (DCE or DTE)RS-485 Serial data rate: 300 to 115,200 bits/s Configuration interface: RS-232 Voice interface: Ear/Microphone Alarm output interface: TTL 4)Power Supply Voltage: +7.5 +26VDC Power consumption Max. current: 230mA/+12VDC Idle: 12mA/+12VDC 5) Others Mechanical: 83.5x47x17.5 (not include antenna) Weight: 100g Operation temperature: -30 +70ºC Related humidity: 95%(non-condensing) Ordering Information H7118 data communication system has been used at many circumstances. Considering the application environment, customers can order different boards, modules and accessories in accordance with their requirements. There are following modules can be selected.The data center should be developed and integrated with customers applications. Product Model Note GPRS DTU H7118C-M2 RS-232 Interface, Moto G24 GPRS module inside, 900/1800Mhz Dual band, +7. 5 26VDC. EDGE DTU H7118C-EM2 RS-232 Interface, Moto G24 EDGE module inside, 900/1800Mhz Dual band, +7. 5 26VDC. Above modules can be designed in accordance with customer's specifications. OEM is also welcome.