<H2><FONT size=3>1. General</FONT> </H2>
<P>At recent years, 2.5 Generation mobile network (GPRS and CDMA 1x) has been used by many countries, it provides a wide coverage and reliable mobile data channel for business and industry applications. Hongdian Technologies Co., Ltd. has developed an amazing and easy using H7710 GPRS/CDMA DTU for those applications. </P>
<P>H7710 GPRS/CDMA DTU can be operated at GPRS or CDMA 1x network by selecting a different radio module. </P>
<P>The maximum GPRS bandwidth can be 171.2Kb/s, but only 40~100Kb/s can be reached for actual application, it provides TCP/IP protocol connections. </P>
<P>The maximum CDMA 1x data transmission bandwidth is about 300Kb/s, the actual operating data rate can be 100Kb/s (symmetric transmission) in China Unicom network, it provides TCP/IP connections for Internet access and other data transmission.
<P>H7710 GPRS/CDMA DTU is a new designed platform, supports GPRS or CDMA 1X network. There are many improvements, such as industrial class pluggable terminal, embedded RTOS and Enhanced EMI design.
<P>H7000 GPRS/CDMA mobile data communication system contains:</P>
<UL>
<LI>H7118 GPRS DTU: RS-232/422/485 interface, high performance,
<LI>H7161 GPRS DTU: Ethernet interface,
<LI>H7612 CDMA DTU: RS-232/485 interface,
<LI>H7661 CDMA DTU: Ethernet interface,
<LI>H7710 GPRS/CDMA DTU: RS232/422/485 interface, common platform, supports GPRS or CDMA 1X network,
<LI>H7031 Data Server Kits: It is a user data center server, provides the GPRS/CDMA 1x packed data protocol conversion. It is a set of development kits for user to integrate with their applications. </LI></UL>
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<H2><FONT size=3>2. H7710 GPRS/CDMA DTU Features</FONT></H2>
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<TD class=td2>1) Transparent data transmission</TD>
<TD class=td2 width=478>H7710 GPRS/CDMA DTU provides transparent data transmission channel (RS232 or RS485 interface) for machine to machine connection.</TD></TR>
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<TD class=td2>2) Non host support</TD>
<TD class=td2 width=478>Normally, GPRS or CDMA 1x Modem can be connected to a PC, and then dial an access number manually; it utilizes PC resources to process the data transmission and protocol conversion. H7710 GPRS/CDMA DTU is a terminal built-in processor, protocol stack and application software; it is working automatically without host PC.</TD></TR>
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<TD class=td2>3) Point to point, and point to multi-point data transmission</TD>
<TD class=td2 width=478>H7710 GPRS/CDMA DTU can be configured as point to point, point to multipoint and center to multipoint network.</TD></TR>
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<TD class=td2>4) Always online</TD>
<TD class=td2 width=478>H7710 GPRS/CDMA DTU will automatically attach to GPRS or CDMA 1x network when the power is on, and then set up a channel to center server..</TD></TR>
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<TD class=td2>5) Toll on traffic</TD>
<TD class=td2 width=478>H7710 GPRS/CDMA DTU can be configured to work always online, and only be charged when data transmitted.</TD></TR>
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<TD class=td2>6) High speed</TD>
<TD class=td2 width=478>Maximum GPRS bandwidth can be 171.2Kb/s, only 40~100Kb/s can be reached at actual application. Maximum CDMA 1x network bandwidth can be 300Kbps. However, the bandwidth will depends the operator's policy. For example, it is only 80~100Kbps bandwidth at China Unicom CDMA 1x network.</TD></TR>
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<TD class=td2>7) Simple and flexible to use</TD>
<TD class=td2 width=478>H7710 GPRS/CDMA DTU is a powerful and easy to used device. It is easy to build your own private mobile data network at anywhere.</TD></TR></TBODY></TABLE></TD></TR>
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<H2><FONT size=3>3. H7710 GPRS/CDMA DTU Functions</FONT></H2></TD></TR>
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<TD vAlign=top width="50%">Basic Functions
<UL>
<LI>Ease to use, reliable and flexible
<LI>Support dual band GPRS or CDMA 1x network
<LI>Always online
<LI>Real clock </LI></UL>
<P>Enhanced Functions</P>
<UL>
<LI>Transparent data transmission
<LI>Support virtual private data network
<LI>Support DDNS or IP address </LI></UL></TD>
<TD>
<UL>
<LI>STK/UTK card configuration
<LI>Support TTL/RS-232/422/485 interface
<LI>Voice interface
<LI>System configuration & maintenance interface
<LI>GUI remote configuration (central maintenance)
<LI>Multiple data service center
<LI>1+0/1+1/1:1 cascading (option)
<LI>SMS backup channel (option)
<LI>System upgrade by Xmodem protocol
<LI>Self-diagnostic and alarm output
<LI>EMC/EMI design
<LI>Enhanced power supply design
<LI>Industrial class pluggable terminals interface </LI></UL></TD></TR>
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<H2><FONT size=3>4. Galaxy Router Specifications</FONT></H2></TD></TR>
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<TD width="50%">Voice
<UL>
<LI>Voice and Emergence Call
<LI>Full rate, Enhanced full rate and half rate
<LI>Support QCELP 13k voice coding
<LI>Echo canceller and noise suppression (option)
<LI>Support DTMF signaling </LI></UL>
<P>GPRS data</P>
<UL>
<LI>GPRS Class 2-10
<LI>Code plan: CS1-CS4
<LI>Complied with SMG31bis specifications </LI></UL>
<P>CDMA 1X Data </P>
<UL>
<LI>Support IS 707 data service
<LI>Support 153kbps packet data
<LI>Support Class 2.0 Group 3 facsimile
<LI>CDMA 2000 spread spectrum
<LI>Complied with IS-95A, IS-95B CDMA interface </LI></UL>
<P>Interface </P>
<UL>
<LI>Antenna: 50ohm/SMA/Female
<LI>UIM/SIM card: 3V
<LI>Serial data interface: RS-232(DCE) or RS-485 </LI></UL></TD>
<TD>
<UL>
<LI>Serial data interface<BR>Type: TTL/RS-232/RS-422/RS-485<BR>Data rate: 300~115,200bits/s<BR>Terminal: 3.5mm pluggable (14-24AWG)
<LI>Configuration interface: RS-232
<LI>Cascading interface<BR>Type: MDTU bus<BR>Connector: Mini-USB
<LI>Voice interface: Ear/Microphone
<LI>Alarm output interface: TTL </LI></UL>
<P>Power Supply </P>
<UL>
<LI>Voltage: +7.5-26VDC(+5VDC optional)
<LI>Power consumption<BR> Max. current: 220mA@+12VDC<BR> Idle: 12mA@+12VDC </LI></UL>
<P>Others </P>
<UL>
<LI>Mechanical: 93x54x22<BR>(not include antenna)
<LI>Weight: 150g
<LI>Operation temperature: -30-+70C
<LI>Store temperature: -40-+85C
<LI>Related humidity: 95%(non-condensing) </LI></UL></TD></TR></TBODY></TABLE></P>
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