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CDMA DTU Usermanual

1. Setup listening mode Default one is 1024 user can setup another one according to his own requirement Get the IP address of the computer Note Fit for the requirements we need to upgrade the software sometimes the version you download maybe different from the photo above The photo above is V1 32 6 1 2 Basic setting AT IISP1 99 1 AT IDNS1 211 136 18 171 AT IUSRN WAP AT IPWD WAP AT IMIS AT CGDCONT 1 ip CMNET You can get the parameter from your local network distributor AT IXRC 0 AT IMTYP 2 Note You can omit this procedure if have set before Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell GX 6 1 3 SOCKET Setting The following is an example of setting TCP communication Default port is 1024 user can setup another one according to his own reguirement AT ISTCP xxx XXX ANN xxx lt Port Number gt lt CR gt Set SOCKET connection here xxx xxx xxx xxx means IP address of the computer lt Port Number gt means port number response I xxx xxx means handle number The center shows the connection and gets the IP address of client if successfully connects The center will display the detailed information amount and speed as soon as the client transmits data Generally IP address of client will be cancelled by the center automatically once the client disconnects with the center via Socket command Please note some unexpected situations the center can t cancel it
2. For more power and conyenience upgrade to hot new i HyperACCESS TODAY Developed for Microsoft by Hilgraeve Inc 2 i Copyright1999 i Hilgraeve Inc Connection Description RH EN a New Connection Enter a name and choose an icon for the connection Name Choose a right port Connect To 2 Ed B test Enter details for the phone number that you want to dial Country region hna zl Area code kee Phone number En Connect using 7 Cancel The right configuration as following Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell FEET COM1 Properties Ki xi Port Settings Bits per second soo Data bits fe d Paty None zl Stop bits Elow control v Restore Defaults K 3 3 When your start up Hyper Terminal it is not connected really you can see the red mark of follow picture without any number And then first Disconnect existing connection second Click the red arrowhead test HyperTerminal MEET File Edit View Cal Transfer Help Del 2 8 oa Second click attribute tab One step Disconnect existing connection No baud rate Connected 0 00 13 Auto detect Auto detect SCROLL cars NUM Capture Print echo Click the configure and make sure again of you modify configure Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell g test Properties EET Conne
3. a UDP connection by command Send data to ip amp port receive data from Iport 000 is handle of the connection send a stream to connect 000 length is n receive data from connection 000 close the connection 000 4 3 DTU Point to Point Connecting Mode Client setting is the same as above server setting is below Note in china mainland the point to point transmit ion mode is used to special network VPDN 4 3 1 TCP Server AT iHSRV clear the parameter Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell g amp ES AT iLPRT port setting the listen port AT iTUP 2 always online AT iPARS parameters save AT i ISNMD switch to SerialNET mode ies wait for the connection establish exit SerialNet mode AT iTUP 0 disable always online function AT iPARS parameter save Note TCP Server must use always online function please put jumper to the pin of watch dog refer chapter 7 for detail 4 3 2 UDP Server No especial setting Note UDP connection both sides is equal so both sides is used the same settings as before Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell GX amp Chapter 5 5 Comom function 5 1 Ping Function AT iPDS1 220 192 32 103 setting advanced destination for ping AT iPDS2 220 192 0 130 setting backup destination for ping when first destination reply time out AT iPDS1 www sina com Se
4. the CDMA Module baud rate AT iBDRF AT iBDRM is TCP IP Module baud rate for command mode AT iSNSI is TCP IP Module baud rate for SerialNET To change baud rate you must take the right order firstly CDMA Module secondary TCP IP Module 5 3 How to setup APN Or VPDN 5 3 1 Setting APN Configuration AT iMIS at cgdcont 1 ip Setting network APN fit for D125211 AT iUSRN user name AT PWD password AT iPARS save the parameter 5 3 2 Setting VPDN configuration AT iUSRN user name AT iPWD password Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell J KEF AT iPPP 1 Setting network VPDN AT iATH n n 1 PAP 2 CHAP Network certification mode need to consult for the UN AT iPARS Save parameter 5 4 AT iTUP Function AT iTUP 0 disable the function AT iTUP 1 trigger up mode AT iTUP 2 always online mode Note1 AT iTUP 2 is for common SerialNET auto redial up when offline AT iTUP 1 is for SerialNET with trigger up offline when no data transfer in a period refer chapter 9 for detail and trigger up by some signal list below 1 detect data need to transfer in serial port 2 detect a ring signal such as the wireless module has been dialed Note2 When the DTU in the command mode and AT iTUP 2 power on in about 20730 seconds the DTU should auto dial up do not respond any command If you don t want to wait press a stream to abort the
5. the one which DNS can read lt Port Number gt means server listen port If successfully sets returns with I OK AT IDSTR lt string gt lt CR gt Set disconnection signal in SerialNET Mode lt String gt means signal string After the terminal receives the signal string it will disconnect automatically lt string gt may be composed of any characters unprintable ASCII character can be replaced by Oxhh here h mean hex number 0 9 or A F that s to say hex number represents the character For example AT IDSTR EEEEE the terminal will disconnect automatically as soon as it receives EEEEE AT IDSTR PP 0x31 the terminal will disconnect automatically as soon as it receives PP1 string Returns with VOK if successfully sets AT ISTYP v lt CR gt Set Socket communication type in Serial NET Mode v 0 1 0 Means TCP 1 means UDP Returns with VOK if successfully sets AT ISNSl lt baud gt lt data_bits gt lt parity gt lt stop_bits gt lt flow gt lt CR gt Set communication interface parameter in SerialNET Mode lt baud gt 3 9 baud rate classification lt data_bits gt 7 8 data bit lt parity gt N E O verification lt stop_bits gt 1 stop bit lt flow gt 0 1 flow control Default value 8 8 N 1 0 57600bps 8 bits doesn t need verify one stop bit doesn t need flow control Returns with VOK if successfully sets AT ilATO n lt CR gt Set IATO parameter n 0 65535 1 2
6. 1 5 heart break cycle in common Returns with VOK if successfully sets Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell FEET Chapter 7 7 Production list Host Entries 1 Standard supply power Entries 1 Supply 9V i antenna Entries 1 Standard supply Pi Production CD piece 1 Standard supply E Shenzhen Forwell Wireless Co Ltd
7. DTU operation 5 5 Watch Dog K1 K2 Monitor Timeout Open Open oo Open Close 15 minutes D228211 Z111 Z311 30 minutes D22h11 C111 Close Open 30 minutes D22S211 Z111 Z311 10 minutes D22h11 C111 close Close 5 minute RG Close GT Close Open Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell g amp ES Re Reserve Monitor Host receive Disable the Function 5 6 Flow Monitor AT iIATO n n gt 60 second offline when no data transfer both send amp receive in the setting time Note In the common SerialNET mode and AT iTUP 2 the DTU should re online immediately In the SerialNET with trigger up and AT iTUP 1 the DTU should be offline until be trigger up Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell GX Chapter 6 6 DTU Communication Guide 6 1 SOCKET Communication D1 DTU has two operating modes one is Command Mode and the other is SerialNET Mode Socket communication is implemented in Command Mode when operating need commands to be sent 6 1 1 Environment reduests You should be sure about the following test environment before starting the test A computer online as application service center which should have public network IP address Assure that the application service center has no programming implementation at gateway and no restriction to 1024 port Copy Server exe Download from www forwellwireless com and implement in the computer
8. Data transfer status 300 400mA D13Z811 Power consumption Sleep mode 70mA Idle mode 5 0mA Data transfer status 300 400mA D13H221 Power consumption Speech mode 250mA Sleep mode 4 0mA Power down 100mA Dimension Interface RS 232 485 TTL DB9 antenna 500hm SMA Female input voltage 5 25V 9V Operating voltage of SIM card 3V 1 8V Max speed rate of CSD 14 4KBPS Module reset AT commands Voice decode standards three kinds of rate Half speed ETS 06 20 Full speed ETS 06 10 Enhanced full speed ETS06 50 06 60 06 80 Volume 75 50 72 16mm weight 200g Environment Ambient temperature 200C to 600C Storage temperature 30 C 85 C humidity lt 90 Shenzhen Forwell Wireless Co Ltd EE Forwell wireless GPRS DTU Usermanual Forwellfg amp k ES Electromagnetic Compatible Electrostatic Discharge ESD 3 classes Radiated radio frequency electromagnetic field immunity test 3 class 2 4 Application Remote Data Monitor and Control Water gas and oil flow metering AMR automatic meter reading Power station monitoring and control Remote POS point of sale terminals Traffic signals monitor and control Fleet management Power distribution network supervision Central heating system supervision Weather station data transmission Hydrologic data acquisition Vending machine Traffic info guidance Parking meter and Taxi Monitor Telecom equipment supervision Mobile base station microwave or optical re
9. Forwell wireless GPRS DTU Usermanual Forwell wireless GPRS DTU Usermanual Forwell SKF YE V1 10 New Exciting Product D1 Series Cellular DTU User Manual Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forweill SK FE D1 Series DTU User Manual Shenzhen Forwell Wireless Co Ltd ADDRESS 2 4A Chaguang Industrial Park Nanshan District Shenzhen P R China Tel 86 755 26621490 Fax 86 755 26621490 Web http www forwellwireless com Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwellfg amp k ES Content 1 PROLOGUE EE EE EE ee 6 1 1 VERSION TTT 6 1 2 REFERENCED DOCUMENTS EEN 6 1 3 NOTICE TTT 2 INTRODUCTION I BT 7 S ET 7 JI SPECIFICATION EE EA ER OE ER RE PAS EE 7 PEA APPLICHTION EA AA MA ER 9 3 GETTING STARTED PLTLLIILIILLLILLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLD 10 3 1 PANEL INTRODUCTION si Henne a nah 10 3 2 THE de EE 10 3 3 CONNECT TO PRODUCTS SEER Ee ETES nun anne ie Beine ae rer 11 ES INSERT SIM Red EE 11 3 5 NOTE EES EE ER ER einem 1 3 6 TEST COMMAND EE assis AE EE AE EE OO EE ests de sip N OE 4 CONFIGURE DTU BY PC LW TCP e TEE 4 1 1 SerialNet Mode 4 1 2 SerialNet Mode with trigger Up een 16 4 1 3 Socket mode ME ee TTT TTR TTT TTR TERETE CRE TORT eR TC ere ee TiS 17 4 2 UDP CONNECT aaen 17 4 2 1 SerialNet Mode ET EE EE EE 17 4 22 SerialNe
10. S CDMA module via the transparent Mode of IP module D1 Serials is usually applicable to the Host which has no TCP IP but has serial interface such as SCM Data Collection Transmission System 2 2 Features Compact and easy to integrate into your solution Multi flexible and compact data interface TTL 232 and 485 TTL and 232 are reduced to Rx Tx GND Supports more IP Protocol families Data transmission via Serial NET Mode enters transmission mode when power on Multi operating status LED Optimized modularization design easy to upgrade 2 3 Specification D12S211 amp D12Z111 amp D12H111 Radio Frequency IFA GSM phase 2 2 hr E GSM EGSM 900MHz DCS GSM 1800MHz Output power Class 4 2 W at EGSM900 Class 1 1 W atDCS1800 D137311 amp D137811 amp D13H221 Radio Frequency TIA EIA 95B CDMA2000 1X Band class 0 800MHz Band class 1 USPCS 1900MHz Transmitting Frequency Range 824 64MHZ 848 37MHZ Receiving Frequency Range 869 94MHZ 893 37MHZ Sensitivity gt 104DB Shenzhen Forwell Wireless Co Ltd DED Forwell wireless GPRS DTU Usermanual Forwell g amp ES D12S211 Power consumption Speech mode 300mA Sleep mode 3 5mA Power down 50uA GPRS Modem average 360mA D12Z111 Power consumption Speech mode 250mA Slepp mode 4 0mA Power down 100mA D12H111 Power consumption Speech mode 250mA Sleep mode 3 8mA Power down 100mA D13Z311 Power consumption Idle mode 70mA
11. Socket connection via serial link 6 2 2 Environment Requests You should be sure about the following test environment before starting the test A computer online as SerialNET Mode server which should have public network IP address Assure that the application service center has no gateway programming implementation and no restriction to 1024 port Copy Server exe Download from www forwellwireless com and implement in the computer Setup listening mode Default one is 1024 Get the IP address of the computer Another machine for communication between SerialNET Client server and server o Open the hyper terminal of the client 6 2 3 Basic setting AT IISP1 99 1 AT IDNS1 211 136 18 171 AT IUSRN WAP AT IPWD WAP AT IMIS AT CGDCONT 1 ip CMNET AT IXRC 0 AT IMTYP 2 Note You can omit this procedure if have set before 6 2 4 Initialization setting Serial NET Mode is established by first defining all related parameters using AT commands Once in Serial NET Mode no additional AT commands may be sent as the host serial link will be dedicated to data any characters will be sent as data In this mode no response for any commands it s normal Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell GX AT IHSRVs XXX XXX XXX XXX lt Port Number gt lt CR gt Set Serial NET communication server IP xxx xxx xxx xxx means IP address or name of the server but it should be
12. TCP Client 4 1 1 SerialNet Mode AT iHSRV ip port set the server IP and port AT iTUP 2 always online mode AT iPARS parameter save AT i SNMD switch to SerialNet mode ae communication exit SerialNet mode AT iTUP 0 disable the always online mode refer chapter 8 for detail AT iPARS parameter save Note our test server 218 108 22 22 80it will send 1 ok to client per minute 4 1 2 SerialNet Mode with trigger up AT iHSRV ip port set the Server IP and port AT ilIATO n n Integer the DTU will offline when the connect no data transport in n seconds AT iTUP 1 set it to trigger up mode refer chapter 8 for detail AT iPARS parameters save AT iSNMD switch to SerialNet mode ee communication exit SerialNet mode Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual AT iTUP 0 AT iPARS Forwellg ES disable the trigger up function parameters save Note our test server 218 108 22 22 80it will send 1 ok to client per minute 4 1 3 Socket mode AT iSTCP ip port 1 000 I ERROR 075 VERROR 207 AT iSSND 000 n AT iSRCV 000 AT iSCLS 000 establish a tcp connection to the IP and port 000 is the Right connection handle not logon cellular network please checking Card and Signal quality logon cellular network But can t connecting to TCP server programme you should to check firewall IP Port and port listen if collid
13. ct To Settings Area code 0755 Phone number Connect using com DI Configure M Use country region code and area code Redial on busy I 3 5 Make sure your modify configure again click OK COM1 Properties 21x Port Settings Bits per second El Data bits Parity Stop bits Flow control Restore Defaults Cancel Apply Then you can see it appeared baud rate on white label then click the black label to make call Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Formel FEE test HyperTerminal Og x File Edit View Call Transfer Help Make call Have show detect Baud cars num Capture Print echo Disconnected auto detect 115200 8 1 SCROLL provide power supply with our products you configured the Hyper Terminal successfully 3 6 Test command Test AT command AT lt CF gt Test at command VOK Response ok parameter if successfully connected you can make sure the module have no malfunction AT CSQ lt CF gt to check the Signal quality CSQ Should be the number between 10 and 31 the signal quality becomes better as the number grows should be is 99 Or you should checking the equipment of antenna or SIM card Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell FEET Chapter4 4 Configure DTU by PC 4 1
14. e with them send a stream to connect 000 length is n receive data from connection 000 close the connection 000 Note our test server 218 108 22 22 80it will send 1 ok to client per minute 4 2 UDP Connect 4 2 1 SerialNet Mode AT iSTYP 1 AT iHSRV ip port AT iLPRT port AT TUP 2 AT iPARS AT i ISNMD AT iTUP 0 AT iSTYP 0 AT iPARS set UDP mode set opposite IP and port set local port for listen always online parameters save switch to SerialNET mode communication exit SerialNet mode disable always online function restore to tcp mode parameter save Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell FREE 4 2 2 SerialNet Mode with Trigger Up AT iSTYP 1 AT iHSRV ip port AT iLPRT port AT iIATO n AT iTUP 1 AT iPARS AT iISNMD AT iTUP 0 AT iSTYP 0 AT iPARS Note change to SerialNet mode the AT command don t have set UDP mode set opposite IP and port set local port for listen n Integer the DTU will offline when the connect no data transport in n seconds set it to trigger up mode refer chapter 8 for detail parameters save switch to SerialNET mode communication exit SerialNet mode disable always online function restore to tcp mode parameter save non 4 2 3 Socket Mode AT iSUCP ip port lport 1 000 AT SSND 000 n AT iSRCV 000 AT iSCLS 000 establish
15. lay station Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Formel HKEE Chapter 3 3 Getting Started 3 1 Panel introduction Antenna Power LED Ring LED Fixer jack 3 DBSturnbuckle Power jack DBS interface Note About Hardware description please according to following file M1_Modem_DTU_Hardware_Description_V600R doc 3 2 The LED state In order to check the module working state Our product have three Led pwr LED is power state Ring LED is Ring state Data LED is Data state Start up Lights up 3s flashing 0 5s wink wink Lights up 0 5s lights up0 5s 0 5s Logon network flashing wink flashing Sleep state Lights up 0 5s wink 0 5s wink wink date Transfer Lights up 0 5s wink 0 5s wink flashing Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell g No date transfer Lights up 0 5s wink 0 5s Lights wink wink up 1s Voice call Lights up 0 5s wink 0 5s Lights up 1s wink wink 4s reboot After 5s wink wink wink 3 3 Connect to products Please connect antenna and cable with our products make sure the port is COM1 or COM2 3 4 Insert SIM Card Open the back cover Insert into SIM card as follow 3 5 Note Hyper Terminal Open the HyperTerminal and input any as follows Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell SKF E HyperTerminal by Hilgraeve Monroe Michigan USA
16. ne 25 6 2 2 Environment Requests seen 26 6 23 EET RE EE EE 26 6 2 4 Initialization setting EE EE 26 7 PRODUCTION LIST ee nn 28 Shenzhen Forwell Wireless Co Ltd SN Forwell wireless GPRS DTU Usermanual Forwell FEE Chapter1 1 Prologue This document is just suit for the following mode type it helps you quickly to used D1 DTU function and resolves some common questions Type Description D125211 GPRS DTU D12Z111 GPRS DTU D12H111 GPRS DTU D13Z311 CDMA DTU D13Z811 CDMA DTU D13H221 CDMA DTU 1 1 Version 1 00 2008 08 27 Nearly complete Gavin 1 10 2009 04 16 Format upgrade Gavin 1 2 Referenced Documents D12_Datasheet_Eng D12_QuickStart_Eng D13_Datasheet_Eng D13_QuickStart_Eng 1 3 Notice Forwell Wireless is a registered trademark of Shenzhen Forwell Wireless Co Ltd The copyright of the document belongs to Shenzhen Forwell Wireless Co Ltd Copying of this document and modifying it and the use or communication of the contents thereof is forbidden without express authority Offenders are liable to the legal sanction Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell GX amp Chapter2 2 Introduction 2 1 Brief D1 Serials is a GPRS CDMA DTU with TCP IP Protocol embedded It has two comparatively individual parts IP module with TCP IP software interface is AT l commands and GPRS CDMA module supports all the AT Commands All the standard AT Commands are transferred to GPR
17. s IP address if disconnects abnormally eg power off when client connects with the center again it will shows that there exists two clients though there just one client connect with the center AT ISSND xxx lt string Length gt lt string gt lt CR gt Transfer data xxx means handle lt string length gt is the string length of The transmission lt string gt means the data You can see the data from the terminal in the center AT ISST xxx lt CR gt Check Socket status xxx means handle Response lt socketstat gt If lt socketstat gt 20 means the number of the byte in Buffer if lt socketstat gt lt 0 means Socket error AT ISRCV xxx lt CR gt receive data xxx means handle Input characters and then press enter thus the data is transferred from the center to the terminal AT ISCLS xxx Close Socket xxx means handle Please see Socket part of AT Command to get detailed information 6 2 SerialNET Mode Communication 6 2 1 Description D1 DTU has two operating modes one is Command Mode and the other is SerialNET Mode Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell G amp Socket communication is implemented in Command Mode when operating need commands to be sent While in SerialNET Mode as long as you initialize its parameter you can transfer data via the parameter directly That s because SerialNET Mode helps the equipment connect to D1 set TCP UDP
18. t Mode with Trigger Up een 18 4 2 3 Socket Mode REESEN 18 4 3 DTU POINT TO POINT CONNECTING MODE EE 18 4 3 1 TCP Server EE SNE TESST ESS PERSE NS SSS NS OE EE RSEEEES 18 4 3 2 UDP Server EE NNN dg gd gd d dg gd gg gd gd geld d gd ge gg dg dg dd gd RER ERR RRE 19 5 COMOM FUNCTION 5 1 PING FUNCTION sesse 5 1 1 Common China Unicom DNS EE EE AE EE EE Ee 20 5 2 HOW TO CHANGE BAUD RATE ss esse sesse esse esse sesse esse ese sees see sees sees seen see ee Gee bee eh Re DE ee EG Re ER EEN 20 5 2 1 Change CDMA Module Baud Rate ME TTT TTT 20 5 2 2 Change TCP IP Module Baud Rate DENENA NNK 21 5 2 3 The relation with parameter to baud rate See 21 5 3 HowTo SETUP APN OR VPDN sesse esse sesse esse esse ee sees se Gee Gee De RR Re DE ee sun Re Re DER RR RR DER sun Re Re EER RR ER nenne 21 5 3 1 kp Te NE EE ntete 21 5 3 2 Setting VPDN configuration een 21 5 4 AT HTUP FUNCTION eene EEN Dee DE Re DER DEE DR ee DEE REG Re EE DEER PRE DEE DEAR RR DER DER ee Re 22 5 5 WATCH DOG rrr sr sone essen nn EE ee 5 6 FLOW MONITOR 6 DTU COMMUNICATION GUIDE Te ee ee ee 24 Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell g amp ES 6 1 SOCKET COMMUNICATION ese ese ee ese ee ee ee see se eke se GR ee GR ee Ge sneseno SESE Re Ge Re Ge Re GR ee GR Re Ge Re Ge ee ee GR ee 24 6 1 1 Environment requests EEN 24 6 1 2 Basic setting EE EE 24 6 1 3 SOCKET Setting EE 25 6 2 SERIAUNET MODE COMMUNICATION EE EE N ER EE N 25 6 2 1 Description ee
19. tting aim top priority server send PING package for cycle you can changed address with others AT iPDS2 www 21cn com setting backup server in case top priority servers have pro blem you can changed address with others AT iPGT 10000 setting timeout AT iPFR n setting frequency to send ping packet AT iPARS parameter save Note The function is only for SerialNET mode detect whether online by period sending ping packet Redial up when be detected offline In Chinese mainland China Unicom filter the ping packet to Internet so the user should set the destination to China Unicom DNS 5 1 1 Common China Unicom DNS 220 192 32 103 220 192 0 130 5 2 How to Change Baud Rate D 5 2 1 Change CDMA Module Baud Rate AT iMCM switch to at command mode AT IPR query current baud rate Shenzhen Forwell Wireless Co Ltd Forwell wireless GPRS DTU Usermanual Forwell GX AT IPR n setting a new baud rate Note n 0 2400 4800 9600 19200 38400 57600 115200 the factory default value is 9600 5 2 2 Change TCP IP Module Baud Rate AT i switch to AT l command mode AT iBDRF n below AT I command should take effect after power down and on AT iBDRM n AT iSNSI n 8 m 1 0 m n o e no parity odd parity even parity the parameters must use low case AT iPARS parameter save 5 2 3 The relation with parameter to baud rate n 3 2400 n 4 4800 n 5 9600 n 6 19200 n 7 38400 n 8 57600 n 9 115200 Note AT IPR change

CDMA DTU Usermanual

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