TomTom HDTM2 HDT Receiver Module 2 User Manual HDTM2

TomTom International BV HDT Receiver Module 2 HDTM2

User manual HDTM2

Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 1 / 39 User Manual of TomTom HDT receiver Module 2 US
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 2 / 39 Page 2 of 39 Document History Version Date Brief Description 1.0 Dec. 03, 2008 New established
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 3 / 39 Page 3 of 39 FCC Regulations: z This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. z This device has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiated radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:  Reorient or relocate the receiving antenna.  Increase the separation between the equipment and receiver.  Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved by the party responsible for compliance could void the user‘s authority to operate the equipment. z This device complies with FCC radiation exposure limits set forth for an uncontrolled environment. In order to avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna shall not be less than 20cm (8 inches) during normal operation.
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 4 / 39 Page 4 of 39 Warning: The maximum antenna gain allowed for use with this device is -0.81 dBi. When the module is installed in the host device, the FCC ID label must be visible through a window on the final device or it must be visible when an access panel, door or cover is easily removed. If not, a second label must be placed on the outside of the final device that contains the following text: “Contains FCC ID: S4L-HDTM2＂
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 5 / 39 Page 5 of 39 Table of Contents 1. INTRODUCTION............................................................................................................................. 6 2. GENERAL PRODUCT DESCRIPTION .......................................................................................... 7 2.1 SIM card interface .......................................................................................................................... 7 2.2 Supply voltage................................................................................................................................. 7 2.3 Power consumption......................................................................................................................... 7 2.4 SIM reader....................................................................................................................................... 8 2.5 Data transmission............................................................................................................................ 8 2.6 Logic level specifications................................................................................................................. 8 2.7 Reset signal..................................................................................................................................... 9 2.8 VIO power output............................................................................................................................. 9 2.9 Connector interface....................................................................................................................... 10 2.9.1 Board-to-board connector interface......................................................................................... 10 2.9.2 Interface description ................................................................................................................ 10 2.10 Operating Frequency.................................................................................................................... 11 2.11 GPRS mode ................................................................................................................................. 11 2.12 Transmitter output power ............................................................................................................. 12 2.12.1 GSM – 850............................................................................................................................. 12 2.12.2 PCS – 1900............................................................................................................................ 12 2.13 Reference sensitivity .................................................................................................................... 12 2.13.1 GSM – 850............................................................................................................................. 12 2.13.2 PCS – 1900............................................................................................................................ 12 2.14 Antenna connector ....................................................................................................................... 12 2.15 Power up / down scenarios .......................................................................................................... 13 2.15.1 Turn on the module................................................................................................................ 13 2.15.2 Turn off the module................................................................................................................ 13 2.15.3 Turn off The module using AT command .............................................................................. 13 2.15.4 Inserted and removal action direction.................................................................................... 14 3. GETTING STARTED..................................................................................................................... 14 3.1 System requirement ....................................................................................................................... 14 3.2 Driver installation............................................................................................................................ 14 3.3 Modem setting................................................................................................................................ 14 3.4 Network setting............................................................................................................................... 25 3.5 Dial-up network by HD Traffic Receiver 2 US................................................................................32 3.6 How to setup Hyper Terminal for AT commands ........................................................................... 34 ANNEX A - AT COMMAND SET FOR HD TRAFFIC RECEIVER MODULE ...................................... 36
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 6 / 39 Page 6 of 39 1. Introduction HD Traffic Receiver Module is a GPRS modem module. It is a small, lightweight, low power consumption and RoHS compliant device that allow digital communication services wherever a GSM 850, PCS 1900 network is present. The module is provided with a 24-pin board-to-board connector. It also provides a 50 Ohm I-PEX MHF series RF conector. From the interface point of view, the module provides the following: z RS232 UART interface z Two wires RS232 interface z VIO output power source z 1.8V/3.0V SIM card holder z System reset z Power ON/OFF function z System power interface
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 7 / 39 Page 7 of 39 2. General Product Description 2.1 SIM card interface Singnal of SIM interface (board to board connector) PIN Name I/O Function I/O type Description 17 SIM_VCC PWR SIM interface SIM Supply SIM power supply 22 SIM_CLK O SIM interface SIM interface signal SIM clock signal 23 SIM_RST O SIM interface SIM interface signal SIM reset signal 24 SIM_IO IO SIM interface SIM interface signal SIM IO serial data The sim card interface support phase 2 GSM11.14 - SIM 1.8V/3V volts. 2.2 Supply voltage The external power supply must be connected to Vpower signal and must fulfill the following requirements: Nominal operating voltage 3.8 V‧ Operating voltage range 3.‧4 V - 4.2 V NOTE: 1. Operating voltage range must never be exceeded; care must be taken in order to fulfillmin/max voltage requirements. 2. The minimum transmission burst voltage in worst network conduction should be kept 3.1V above. 2.3 Power consumption The typical current consumption of HDT receiver Module 2 US is: Power off current (Typical) <= 60 uA Stand-by current (GSM idle) <= 4 mA Operating current in GSM channel <= 300 mA Operating current in GPRS class 10 <= 500 mA
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 8 / 39 Page 8 of 39 2.4 SIM reader The HD Traffic Receiver Module 2 US support phase 2 GSM11.14 - SIM 1.8V/3V volts. 2.5 Data transmission The HDT Receiver Module 2 US supports GPRS Class 10, MS Class B. 2.6 Logic level specifications Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels. The following table shows the logic level specifications used in the module interface circuits: Absolute Maximum Ratings –Not Functional Parameter Min Max Input level on any digital pin when on - 0.3 V + 3.75 V Input voltage on any analog pins when on - 0.3 V + 3.0 V Operating Range –Interface level (2.8V CMOS) Level Min Max Input high level 2.1 V 3.3 V Input low level 0 V 0.5 V Output high level 2.2 V 3.0 V Output low level 0 V 0.35 V Operating Range –Interface level (2.0V CMOS) Level Min Max Input high level 1.6 V 3.3 V Input low level 0 V 0.4 V Output high level 1.65 V 2.2 V Output low level 0 V 0.35 V
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 9 / 39 Page 9 of 39 2.7 Reset signal RESET signal is used to reset the HDT Receiver Module 2 US . Whenever this signal is pulled low, the module is reset. When the device is reset it stops any operation and after the release of the reset it is unconditionally rebooted, without doing any detach operation from the network where it is registered. This behavior is not like a proper shut down because any GSM device is requested to issue a detach request on turn off. For this reason the Reset signal must not be used to normally shutting down the device, but only as an emergency exit in the rare case the device remains stuck waiting for some network response. The RESET is internally controlled on start-up to achieve always a proper power-on reset sequence, so there's no need to control this pin on start-up. It may only be used to reset a device already on that is not responding to any command. Reset Signal Operating levels: Signal Min Max RESET Input high 2.2 V* 3.3 V RESET Input low 0 V 0.2 V * This signal is internally pulled up so the pin can be left floating if not used If unused, this signal may be left unconnected. If used, then it must always be connected with an open collector transistor, to allow the internal circuitry the power on reset and under voltage lockout functions. 2.8 VIO power output A regulated power supply output is provided in order to supply small devices from module. This output is active when the module is ON and goes off when module is shut down. The operating range characteristics of the supply are: Operating Range –VIO power supply Min Typ Max Output voltage 2.76 V 2.85 V 2.93 V Output current 50 mA Output bypass capacitor 2.2 uF
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 10 / 39 Page 10 of 39 2.9 Connector interface 2.9.1 Board-to-board connector interface PIN Definition GND 1 2 GND Vpower 3 4 Vpower Vpower 5 6 Vpower GND 7 8 GND SYS_EN 9 10 VIO RI 11 12 GND EXTRSTN 13 14 CTS GND 15 16 RTS SIM_VCC 17 18 RXD SIM_VCC 19 20 TXD GND 21 22 SIM_CLK SIM_RST 23 24 SIM_IO 2.9.2 Interface description PIN Name I/O Function I/O type Description 1 GND PWR GSM Power Supply Ground Power GND 2 GND PWR GSM Power Supply Ground Power GND 3 Vpower PWR GSM Power Supply From 3.5 to 4.2 V (Typ: 3.8 V) Input power for System4 Vpower PWR GSM Power Supply From 3.5 to 4.2 V (Typ: 3.8 V) Input power for System5 Vpower PWR GSM Power Supply From 3.5 to 4.2 V (Typ: 3.8 V) Input power for System6 Vpower PWR GSM Power Supply From 3.5 to 4.2 V (Typ: 3.8 V) Input power for System7 GND PWR GSM Power Supply Ground Power GND 8 GND PWR GSM Power Supply Ground Power GND 9 SYS_EN I Power on/off system CMOS 3.3V compatible When SYS_EN is high , the system will power on 10 VIO O 2.85V Output 2.85V Output The range of VIO is between 2.76V and 2.93V
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 11 / 39 Page 11 of 39 11 RI O Asynchronous Serial Interface 0 CMOS 3.3V compatible Ring Indicator 12 GND PWR GSM Power Supply Ground Power GND 13 EXTRSTN I External reset CMOS 3.3V compatible External HW reset 14 CTS I Asynchronous Serial Interface 0 CMOS 3.3V compatible RTS (DCE) 15 GND PWR GSM Power Supply Ground Power GND 16 RTS O Asynchronous Serial Interface 0 CMOS 3.3V compatible CTS (DCE) 17 SIM_VCC PWR SIM interface SIM Supply SIM power supply 18 RXD I Asynchronous Serial Interface 0 CMOS 3.3V compatible RX (DCE) 19 SIM_VCC PWR SIM interface SIM Supply SIM power supply 20 TXD O Asynchronous Serial Interface 0 CMOS 3.3V compatible TX (DCE) 21 GND PWR GSM Power Supply Ground Power GND 22 SIM_CLK O SIM interface SIM interface signal SIM clock signal 23 SIM_RST O SIM interface SIM interface signal SIM reset signal 24 SIM_IO IO SIM interface SIM interface signal SIM IO serial data 2.10 Operating Frequency The Module supports 850/1900 Dual Band. Mode Freq. TX (MHz) RX (MHz) GSM-850 TX: 824.2 - 848.8MHz RX: 869.2 - 893.8MHz PCS-1900 TX: 1850.2 - 1909.8MHz RX: 1930.2 - 1989.8MHz 2.11 GPRS mode The Module compliant with GMS/GPRS protocol stack R.99 ‧ GPRS multi-slot class 10 ‧ MS class B ‧ Coding scheme 1-4
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 12 / 39 Page 12 of 39 2.12 Transmitter output power 2.12.1 GSM – 850 The Module in GSM–850 operating mode are class 4 in accordance with the specifications that determine the nominal 2W peak RF power (+33dBm) on 50-Ohm load. 2.12.2 PCS – 1900 The module in PCS–1900 operating mode are class 1 in accordance with the specifications that determine the nominal 1W peak RF power (+30dBm) on 50-Ohm load. 2.13 Reference sensitivity 2.13.1 GSM – 850 The sensitivity of the GSM-850 according to the specifications for the class 4 is -109dBm typical in normal operating conditions. 2.13.2 PCS – 1900 The sensitivity of the PCS–1900 according to the specifications for the class 1 is -108dBm typical in normal operating conditions. 2.14 Antenna connector The Module is equipped with a 50 Ohm RF connector from I-PEX, MHF series P/N 20279-001E-01.
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 13 / 39 Page 13 of 39 Moreover, it has the antenna pads on the PCB to accept spring clips for antenna contact. 2.15 Power up / down scenarios In general, be sure not to turn on the module while it is out of the operating range of voltage in Chapter 2.2. 2.15.1 Turn on the module The module can be activated via SYS_EN signal. When switch on the Module the SYS_EN signal needs to be driven to high level for at least 150ms 2.15.2 Turn off the module To switching the module off the following procedures may be used: ＊ Normal shutdown: Software controlled by sending the AT command over the serial application interface. ＊ Automatic shutdown: Takes effect if under voltage is detected. 2.15.3 Turn off The module using AT command The best and safest approach to powering down the module is to issue the AT command. This procedure let the module log off from network and allows the software to enter into a secure state and safe data before disconnecting the power supply. The mode is referred to as POWER OFF mode. In this mode, only the RTC stays active. Command syntax: AT+CPWROFF Command Possible responses AT+CPWROFF Note: switch off the module OK Or CME ERROR: <error> Test command AT+CPWROFF=? OK After sending AT+CPWROFF do not enter any other AT command. There are two ways to verify when the module turns off.
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 14 / 39 Page 14 of 39 ＊ Wait for the “OK”. It indicates that data have been stored in the non-volatile memory and the module turn off in less than 1 second. ＊ Also, you can monitor the VIO pin. The low state of VIO definitely that the module is switched off. When the module is in POWER OFF mode the application interface is switched off and must not be fed from any other source. Therefore, your application must be designed to avoid any current flow into any digital pins of the application interface. 2.15.4 Inserted and removal action direction These models are made very thin so that they may be smaller in size and light in weight than before. Take care not to give then excessive force and insert by sliding when mating them together or un-mating them. Otherwise, breakage may result. To prevent damage from incorrect insertions please confirm the correct position before mating connection. 3. Getting Started 3.1 System requirement The following shows the operation by PC with Microsoft Window 2000, XP or Vista. The screen display for each procedure may be a little different for different operating system. 3.2 Driver installation Please install “CP210x_VCP_Win2K_XP_S2K” driver on your PC before doing your Modem setting. The driver is for Silicon Laboratories’ CP210X USB to UART Bridge chip in the device. 3.3 Modem setting Please use “Control Panel” to install new modem.
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Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 18 / 39 Page 18 of 39 Select the COM port that you have installed “CP210x_VCP_Win2K_XP_S2K3” driver. For example: COM3 in the installation demo.2 31 1 2
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 19 / 39 Page 19 of 39 Your modem has been set up for the first step. Next step, we will run advanced setting of modem.
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Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 21 / 39 Page 21 of 39 Typing into “at+cgdcont=1, “ip”, “internet” for extra initialization commands. This command allows to specify specific PDP context parameter values for a PDP context. 1 2
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 22 / 39 Page 22 of 39 Please make sure that the flow control is “None”. 2 1
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 23 / 39 Page 23 of 39 Please make sure that hardware settings are the same as above. 1 2
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 24 / 39 Page 24 of 39 Please make sure maxmun port speed to be 115200.
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 25 / 39 Page 25 of 39 3.4 Network setting Double click “Network and Dial-up Connections” icon to run network setting.
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Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 28 / 39 Page 28 of 39 Please type “*99#” into phonebook number. 1 23 4
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 29 / 39 Page 29 of 39 Type the name you want to use for this connection. For example: Prague
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 30 / 39 Page 30 of 39 Pressing the right button of mouse on “Prague” connection icon, you need to change the properties.
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 31 / 39 Page 31 of 39 All hardware features of modem protocol should be disabled. Now, you have completed all modem and network setting. You can use Section 2.3 to dial up network directly in the future.1 2 3 4
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 32 / 39 Page 32 of 39 3.5 Dial-up network by HD Traffic Receiver 2 US Pressing “Prague” icon to dial up network. Keep empty for user name and password.
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Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 34 / 39 Page 34 of 39 3.6 How to setup Hyper Terminal for AT commands Run Hyper Terminal from Windows XP Start->Programs->Accessories->Communications->Hyper Terminal Set the name for connection (e.g. “MI01_connection”), then press OK Select the PC serial port (for example COM2) , then press OK Select the appropriate setting for MI01 data modem serial port setting; then select APPLY/OK.
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 35 / 39 Page 35 of 39 If the HD Traffic Receiver module is power up, you type AT then the response must be OK.
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 36 / 39 Page 36 of 39 Annex A - AT command set for HD Traffic Receiver Module 1. General commands  Manufacturer identification +CGMI  Request model identification +CGMM  Request revision identification +CGMR  Request product serial number identification +CGSN  Set TE character set +CSCS  Request international mobile subscriber identification +CIMI  Card identification +CCID  Request complete capabilities list +GCAP  Repeat last command A/ 2. Call control commands  Select type of address +CSTA  Dial command D  Select tone dialing T  Select pulse dialing P  Call answer A  Hook control H  Monitor speaker loudness L  Monitor speaker mode M  Call mode +CMOD  Hangup call +CHUP  Extended error report +CEER  Tone duration +VTD  DTMF and tone generation +VTS  Redial last telephone number ATDL  Automatic answer S0 3. Network service commands  Subscriber number +CNUM  Signal quality +CSQ  Operator selection +COPS  Network registration +CREG  Preferred operator list +CPOL  Read operator names +COPN 4. Security commands  Enter PIN +CPIN  Facility lock +CLCK  Change password +CPWD 5. Mobile equipment control and status commands  Phone activity status +CPAS  Switch off MS +CPWROFF  Set phone functionality +CFUN  Battery charge +CBC  Indicator control +CIND  Mobile termination event reporting +CMER  Clock +CCLK  Alarm +CALA  Delete alarm +CALD  Restricted SIM access +CRSM  Alert sound mode +CALM  Ringer sound level +CRSL  Speech volume level +CLVL
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 37 / 39 Page 37 of 39  Mute control +CMUT  Call meter maximum event +CCWE  Set greeting text +CSGT  Automatic Time Zone Update +CTZU  Time Zone Reporting +CTZR  Report mobile termination error +CMEE  List all available AT commands +CLAC 6. Phonebook commands  Select phonebook memory storage +CPBS  Read phonebook entries +CPBR  Find phonebook entries +CPBF  Write phonebook entry +CPBW 7. Short messages commands  Select message service +CSMS  Preferred message storage +CPMS  Preferred message format +CMGF  Save settings +CSAS  Restore Settings +CRES  Show text mode parameters +CSDH  New message indication +CNMI  Read message +CMGR  New Message Acknowledgement to ME/TA +CNMA  List message +CMGL  Send message +CMGS  Write message to memory +CMGW  Send message from storage +CMSS  Set text mode parameters +CSMP  Delete SMS +CMGD  Service center address +CSCA  Select cell broadcast message types +CSCB 8. Supplementary services commands  Call forwarding +CCFC  Call waiting +CCWA  Calling line identification restriction +CLIR  Calling line identification presentation +CLIP  Connected line identification presentation +COLP  Connected line identification restriction +COLR  Advise of charge +CAOC  Accumulated call meter +CACM  Accumulated call meter maximum +CAMM  Price per unit and currency table +CPUC  Call related supplementary services +CHLD  Call deflection +CTFR  List current calls +CLCC  Supplementary service notifications +CSSN  Unstructured supplementary service data +CUSD  Closed user group +CCUG  Calling name presentation +CNAP 9. Data commands  Select bearer service type +CBST  Service class selection and identification +FCLASS  Service reporting control +CR  Cellular result codes +CRC  Radio link protocol +CRLP
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 38 / 39 Page 38 of 39 10. V24 control and V25ter commands  Reset to default configuration Z  Set to factory defined configuration &F  Circuit 109 behavior &C  Circuit 108/2 behavior &D  DSR override &S  Flow control &K  Store current configuration &W  Display current configuration &V  Designate a default reset profile &Y  Request identification information I  Request manufacturer Identification +GMI  Request model identification +GMM  Request revision identification +GMR  Request product serial number identification +GSN  DTE-DCE character framing +ICF  DTE-DCE local flow control +IFC  Set flow control \Q  Fixed DTE rate +IPR  Return to on-line data state O  Escape character S2  Command line termination character S3  Response formatting character S4  Command line editing character S5  Pause before blind dialing S6  Connection completion timeout S7  Command dial modifier time S8  Automatic disconnect delay S10  Escape prompt delay (EPD) S12  Command echo E  Result code suppression Q  DCE response format V  Result code selection and call progress monitoring control X 11 Specific AT commands  Production test command #  GPRS cell environment description +CGED  Switch trace ON/OFF +TRACE  Select Band +XBANDSEL  Set reporting call status +XCALLSTAT  Display generation and SW version +XGENDATA  Read counters of sent or received GPRS data +XGCNTSET  Set/reset counter of sent or received GPRS data +XGCNTSET  Set hands free mode +XHANDSFREE  Call the L1-specific function +XL1SET  Configuration trace and modem (AT) interfaces +XSIO  ADC read command +NADC  GPIO select configuration command +NGPIOC  GPIO read command +NGPIOR  GPIO set command +NGPIOW  Ringer select command +NRNG  Tone generator +NTGN (Tone GeNerator)  Alert sound mode +NMSM (Message Sound Muting)  Power saving control +NPSV (Power SaVing) 12. GPRS commands  Define PDP context +CGDCONT  GPRS event reporting +CGEREP  Quality of service profile (requested) +CGQREQ  Quality of service profile (minimum acceptable) +CGQMIN
Doc No： Topic： User Manual of TomTom HDT receiver Module 2 US Ver： 1.1 Page： 39 / 39 Page 39 of 39  GPRS attach or detach +CGATT  PDP context activate or deactivate +CGACT  Enter data state +CGDATA  Automatic response to a network request for PDP context activation +CGAUTO  Show PDP address +CGPADDR  GPRS mobile station class +CGCLASS  GPRS network registration status +CGREG  Select service for MO SMS messages +CGSMS 13. TCP/IP AT Commands  Packet Switched Data +NPSD  Packet Switched Data Action +NPSDA  Packet Switched Network Assigned Data +NPSND  Circuit Switched Data +NCSD  Circuit Switched Data Action +NCSDA  Circuit Switched Network Assigned Data +NCSND  Create Socket +NSOCR  Set Socket Option +NSOSO  Get Socket Option +NSOGO  Close Socket +NSOCL  Get Socket Error +NSOER  Set Listening Socket +NSOLI  Connect Socket +NSOCO  Write Socket Data +NSOWR  Read Socket Data +NSORD 14. Reference 3GPP TS27.007 Technical Specification Terminals; AT command set for User Equipment (UE); V3.11.0

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