TomTom HDTM2 HDT Receiver Module 2 User Manual HDTM2
TomTom International BV HDT Receiver Module 2 HDTM2
  
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User manual HDTM2

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 User Manual 
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 TomTom  
HDT receiver Module 2 US 

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Document History 
Version  Date  Brief Description 
1.0  Dec. 03, 2008  New established 

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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. 

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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"

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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 

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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 

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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 

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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 

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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 

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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 System
4   Vpower  PWR   GSM Power Supply   From 3.5 to 4.2 V (Typ: 
3.8 V)   Input power for System
5   Vpower  PWR   GSM Power Supply   From 3.5 to 4.2 V (Typ: 
3.8 V)   Input power for System
6  Vpower  PWR   GSM Power Supply   From 3.5 to 4.2 V (Typ: 
3.8 V)   Input power for System
7  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 

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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 

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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. 

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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. 

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* 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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1 
2

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Select the COM port that you have installed “CP210x_VCP_Win2K_XP_S2K3” driver. For example: 
COM3 in the installation demo.
2 
3
1 
1 
2

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Your modem has been set up for the first step.  
Next step, we will run advanced setting of modem. 

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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

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Please make sure that the flow control is “None”. 
2 
1 

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Please make sure that hardware settings are the same as above. 
1 
2 

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Please make sure maxmun port speed to be 115200.

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3.4  Network setting 
Double click “Network and Dial-up Connections” icon to run network setting.  

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Please type “*99#” into phonebook number. 
1 
2
3 
4

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Type the name you want to use for this connection. For example: Prague

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Pressing the right button of mouse on “Prague” connection icon, you need to change the properties.

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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 

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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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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. 

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If the HD Traffic Receiver module is power up, you type AT then the response must be OK. 

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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  

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  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  

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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  

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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