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Descriptions and non-contractual illustrations in this document are given as an indication only.

ERCOGENER reserves the right to make any modification.

Dct_427_02

5.5 Checking the quality of the GSM reception signal

The modem will be able to make a call only if the received GSM signal is powerful enough.

The command

AT+CSQ

allows to know the reception level

(

rssi

) of the signal sent by the closest GSM Base

Transceiver Station (BTS), as well as the reception error code (

When the SIM card is inserted and the PIN code entered, the command

AT+CSQ

allows to measure the

signal from the BTS of the subscribed operator network.

This command cannot be used without the SIM card.

To check the quality of the GSM signal, do the following operations:

Use communication software like HyperTerminal enter the command

AT+CSQ

The response is in the following format:

+CSQ : <rssi>, <ber>

with:

rssi

= indicates the reception level,

ber

= receive bit error rate.

Check the returned value

rssi

with the help of the table below.

Table 42 : RSSI value

Value of

<rssi>

Gain in dbm

Interpretation

Value of

<ber>

Interpretation

-113 dbm

Insufficient

0 à 7

See Standards ETSI
GSM 05.08

1 à 10

-111 à -95 dbm

Insufficient

11 à 30

-93 à -53 dbm

Sufficient

31 (max)

-51dbm

Perfect

Unknown/not detectable 99

Unknown/not detectable

The GSM modem works normally with a minimum

rssi

between 11 and 15.

Below 10, the signal level is insufficient; the modem cannot work depending on the geographical situation or

the vehicle mobility. Above 15, the signal is sufficient..

For more information about the AT commands, see the document "u-blox_AT_Commands_Manual_xxx.pdf

Содержание GenPro 25e

Страница 1: ...User Guide GenPro 25e Reference EG_GenPro25e_1055_UG_002_UK Revision 002 Date 17 05 2018 http www ercogener com Dct_427_02 ...

Страница 2: ... Document History Rev Modifications Author Date Validation Date 000 Creation YST 23 01 2015 BBO 24 01 2014 001 Update Dct_427_02 Update Warning 3 10 1 Microphone input MIC Options presentation 3 4 2 2 Consumption of the GenPro 25e YST 17 05 2018 PBR 31 10 2018 The main modifications of this document compared to the previous version are easily identifiable on a screen by the blue color of the text ...

Страница 3: ...Modem fixing 15 2 4 CHARACTERISTICS AND SERVICES 16 2 4 1 Services 16 2 5 ENVIRONMENTAL CHARACTERISTICS 18 3 INTERFACES 19 3 1 FRONT SIDE 19 3 2 BACK SIDE 20 3 3 FUNCTIONAL DESCRIPTION 21 3 3 1 General 21 3 3 2 Functional architecture of option 21 3 4 POWER SUPPLY 22 3 4 1 Power supply cables 22 3 4 2 Power supply VDC 22 3 4 2 1 Internal battery option S0431B 23 3 4 2 2 Consumption of the GenPro 2...

Страница 4: ...ENNA 41 5 USE OF THE MODEM 42 5 1 SPECIFIC RECOMMENDATIONS FOR THE USE OF THE MODEM IN VEHICLES 42 5 1 1 Recommended connection on the battery of a truck 42 5 2 TURNING THE MODEM OFF 43 5 3 STARTING WITH THE MODEM 44 5 3 1 Mounting the modem 44 5 3 2 SIM card installation 44 5 4 USE THE MODEM 45 5 4 1 Checking the communication with the modem 45 5 4 1 1 Without Application 45 5 4 1 2 With the tran...

Страница 5: ...tractual illustrations in this document are given as an indication only ERCOGENER reserves the right to make any modification Dct_427_02 ANNEX 1 4 PINS MICRO FIT CABLE POWER SUPPLY 52 ANNEX 2 WIRE MICRO FIT CABLE CONNECTOR INPUT OUTPUT 53 ANNEX 3 ABBREVIATIONS 54 ...

Страница 6: ...to coupled inputs 27 Table 17 Characteristics of the analog input option S0434B 28 Table 18 Characteristics of the analog input option S0434B 28 Table 19 One Wire Bus description 29 Table 20 Bus ONE WIRE Electrical characteristics 29 Table 21 Multi One Wire bus description 30 Table 22 Multi One Wire bus Electrical characteristics 30 Table 23 Description of digital outputs 31 Table 24 Characteristi...

Страница 7: ...t to make any modification Dct_427_02 Table 42 RSSI value 47 Table 43 Verification of PIN code 48 Table 44 Verification of modem registration on GSM network 48 Table 45 Verification of modem registration on GPRS network 49 Table 46 Characteristics of power supply cable 52 Table 47 Characteristics of 2 wire Micro FIT cable 53 Table 48 Wiring of 2 wires cable 53 ...

Страница 8: ...ternal electrical scheme of the output 31 Figure 14 Normalized signals of a RS232C serial link 32 Figure 15 Status of CTS signal 33 Figure 16 Status of RI signal 33 Figure 17 Normalized signals of output 3 8VDC 34 Figure 18 Internal electrical scheme of BOOT 35 Figure 19 Internal electrical scheme of RESET 36 Figure 20 Chronogram of RESET signal 36 Figure 21 Typical assembly Handset 39 Figure 22 T...

Страница 9: ... see EG_EasePro_V2xx_CL_yyy_UK pdf Specific development mode the EGM development tool allows the development of a customized application For more information about the tools and trainings please contact our sales department The GenPro 25e provides digital inputs outputs allowing the creation of embedded telematic solutions with high added value This document describes the modem and provides the fo...

Страница 10: ...ence or a bad coverage or termination of the GSM GPRS networks Dysfunctions if the product is used for the watching of physical persons where human life is engaged ERCOGENER reserves the right to modify the functions of its products GenPro 25e and EasePro without previous notice In order to avoid any risk of electrocution do not open the casing For any functioning the casing must be closed No inte...

Страница 11: ...re information thank you to contact your nearest legally qualified local government representative ERCOGENER follows a method of continuous development Consequently ERCOGENER reserves the right to change and improve any of its products described in this document without previous notice The contents of this document are provided as it is Except for the applicable obligatory laws no guarantee in any...

Страница 12: ... Fuel warehouses Chemical factories Places where destruction operations are in the running Other places where signs indicate that the use of cellular phones is prohibited or dangerous Other places where you should normally turn OFF the engine of your vehicle There can be a danger associated with the use of your GSM modem close to insufficiently protected medical devices such as acoustic devices an...

Страница 13: ... to preserve this product for many years Do not expose the modem to the extreme environments to high temperature or high humidity Do not use or store the modem in dusty or dirty places it could be damaged Do not try to disassemble the modem at the risk of cancelation of the guarantee Do not expose the modem to water rain or spilled beverage it is not impermeable Avoid dropping striking or shaking ...

Страница 14: ...ging 2 1 Content The GenPro 25e is supplied with a GenPro 25e cardboard packaging a modem GenPro 25e 2 fixing brackets a 4 wire cable Red Black Yellow Brown stripped with fuse mini Blade 2A 32V a 2 wire cable Blue Yellow stripped a technical sheet Instructions Sheet Figure 1 Content 2 2 Modem packaging The external dimensions of the modem packaging are Width 54 5 mm Height 68 mm Length 108 mm Weig...

Страница 15: ...nsions 73 x 54 5 x 25 5 mm excluding Connectors Complete dimensions 88 x 54 5 x 25 5 mm Weight 88 grams modem only 190 grams modem brackets cables Volume 101 5 cm Casing Aluminum profile Waterproof class IP31 The illustration below shows the dimensions of the modem including the clearances necessary for the installation of the modem Figure 2 Mechanical characteristics 2 3 1 Modem fixing 2 brackets...

Страница 16: ...9 6 kb s DL UL 3 Transparent mode Non transparent mode Network Operation Modes I to III SMS MT MO CB PDU Text mode SMS over PSD or CSD Sensibility GSM850 E GSM900 25 C 110 dBm Downlink RF level BER Class II 2 4 5 DCS1800 PCS1900 25 C 109 dBm Downlink RF level BER Class II 2 4 5 SIM Toolkit Voice functions HR FR EFR AMR Echo cancellation Noise reduction 1 Device can be attached to both GPRS and GSM...

Страница 17: ...oltage analog Input 0 10V S0434B replaces the opto coupled Input E2 Power voltage measure VDC S0455B Option Multi ONE WIRE S0485B replaces the opto coupled Input E3 Transparent mode S0502A Output 3 8V S0512A instead of signal RING on pin 13 Sub D 15 points DTMF with EasePro V2 20 S0536 NTRIP application S0445A EaseIP application S0519A Rail DIN fixing K002 Waterproof case K011 Transparent waterpro...

Страница 18: ... temperature range 40 C to 85 C Operating humidity without condensation HR 70 55 C Atmospheric pressure 700 hPa to 1060 hPa 400 m à 3000 m If the battery option is present the environmental conditions are different See table below Operating temperature range Battery charging 0 C to 45 C Battery discharging 20 C to 45 C Storage temperature range 1 year of storage between 20 C to 35 C 3 months of st...

Страница 19: ...4 Front side Connector Micro Fit 4 points SubD HD 15 points Micro Fit 2 points 1 OUTPUT 1 O1 1 Signal detection 109 DS DCD 1 INPUT 2 I2 2 INPUT 1 I1 2 Data transmission 103 ED TXD 2 INPUT 3 I3 3 GND 3 Boot BOOT 4 VDC 4 Microphone MIC P 5 Microphone MIC 6 Data reception 104 RD RXD 7 Data set ready 107 PDP DSR 8 Data terminal ready 108 2 TDP DTR 9 Signalization ground 102 TS GND 10 Loudspeaker SPK 1...

Страница 20: ...scriptions and non contractual illustrations in this document are given as an indication only ERCOGENER reserves the right to make any modification Dct_427_02 3 2 Back side Figure 5 Back side Connector SMA F GSM antenna GSM LED SIM card cover ...

Страница 21: ...ument are given as an indication only ERCOGENER reserves the right to make any modification Dct_427_02 3 3 Functional Description 3 3 1 General Figure 6 Functional Description 3 3 2 Functional architecture of option Contact us for the setting of the different options Figure 7 Architecture of option ...

Страница 22: ...odem will not be protected The pins 1 and 2 are used for the functions Input Output The power supply to the modem is done only via the pins 4 VDC and 3 GND The modem must be powered by an external DC voltage The internal regulation is done by a DC DC converter and allows the supply of all necessary internal DC voltages The modem is also internally protected against voltage peaks of more than 32 VD...

Страница 23: ...d 20 minutes in GSM communication 900 MHz 1Rx 1Tx serial link not connected no input output connected at a maximum transmission level 30 minutes in GPRS communication 900 MHz 3Rx 2Tx serial link not connected no input output connected at a maximum transmission level When the battery is charged it is not possible to do an ON OFF of the device Only putting the Reset input pin 10 of the 16 pin Micro ...

Страница 24: ...e command AT EGLOP 1 xx The GenPro 25e is attached to the network Table 9 Consumption in attached mode 25 C without battery charging Mode attaché IMOY MAX Unit VIN 6 5 12 24 32 V GSM GPRS 56 32 18 16 mA The GenPro 25e is attached to the network Table 10 Consumption in data transfer 25 C without battery charging Unit VIN 6 5 12 24 32 V GSM 900 1 IMOY MAX 260 130 60 50 mA IPeak MAX 1380 650 320 250 ...

Страница 25: ...ging Attached mode IMOY MAX Unit VIN 6 5 12 24 32 V GSM GPRS 70 40 20 15 mA The GenPro 25e is attached to the network Table 13 Consumption in data transfer with option S0502A 25 C without battery charging Unit VIN 6 5 12 24 32 V GSM 900 1 IMOY MAX 270 130 70 50 mA IPeak MAX 1380 640 320 240 mA 1 800 2 IMOY MAX 190 100 50 40 mA IPeak MAX 760 380 190 150 mA GPRS 1 Rx 1 Tx 900 1 IMOY MAX 260 130 60 5...

Страница 26: ...COGENER reserves the right to make any modification Dct_427_02 3 4 2 3 Power Dimensioning The graph below indicates the maximum peak current The power supply must be able to supply this current during the GSM Burst Figure 8 Consumption max This consumption is not permanent It corresponds to the burst consumption during GSM communications ...

Страница 27: ...r GND See ANNEX 1 4 pins Micro FIT cable Power supply Corresponds to wires Yellow for E2 Blue for E3 Black for GND See ANNEX 2 wire Micro FIT cable connector Input Output Table 16 Characteristics of opto coupled inputs Characteristics Symbols Conditions Min Typ Max Unit Max current IF rms 50 mA Max inverted voltage VR 5 V Direct voltage VF IF 10 mA 1 0 1 15 1 3 V Inverted current IR VR 5 V 10 µA C...

Страница 28: ...g input 0 10 V Corresponds to wires Yellow for ANA1 Black for GND see ANNEX 1 4 pins Micro FIT cable Power supply et ANNEX 2 wire Micro FIT cable connector Input Output Table 18 Characteristics of the analog input option S0434B Characteristics Symbols Conditions Min Typ Max Unit Analog input ANA1 0 3 12 VDC Conversion range 6 5 V VDC 32V 0 010 10 33 VDC Polarization current from 10 mV to 10 33 V 1...

Страница 29: ... GND see ANNEX 1 4 pins Micro FIT cable Power supply et ANNEX 2 wire Micro FIT cable connector Input Output Table 20 Bus ONE WIRE Electrical characteristics Characteristics Symbols Conditions Min Typ Max Unit Input Voltage Low VIL 0 3 0 8 VDC Input Voltage High VIH 2 3 5 VDC Hysteresis Voltage VHys 0 4 0 7 VDC Input Leakage Current ILEAK 4 38 µADC Input capacitance CIN 14 pF Output Low level Volta...

Страница 30: ...Rate 6 PDSRC 1 4 2 V μs Pullup Slew Rate 6 PUSRC 0 8 4 V μs Power On Reset Trip Point VPOR 2 2 V Write One Read Low Time tW1L 7 6 8 8 4 μs Read Sample Time tMSR 13 3 14 15 μs 1 Wire Time Slot tSLOT 65 8 69 3 72 8 μs Fall Time High to Low 6 7 tF1 0 54 3 0 μs Write Zero Low Time tW0L 60 64 68 μs Write Zero Recovery Time tREC0 5 0 5 3 5 6 μs Reset Low Time tRSTL 570 600 630 μs Presence Detect Sample ...

Страница 31: ...r 4 pins S Logic Open collector output Corresponds to wires Brown for S2 Black for GND See ANNEX 1 4 pins Micro FIT cable Power supply Table 24 Characteristics of open collector output Characteristics Symbols Conditions Min Typ Max Unit Max voltage VCE0 Transmitter open 48 VDC Max voltage VCES VBE 0 V 48 VDC Collector current IC 0 5 ADC Saturation voltage VCEsat IC 500 mA 1 3 VDC Dissipation PTtot...

Страница 32: ...ve serial data 107 PDP DSR 7 O Data Set Ready 108 2 TDP DTR 8 I Data Terminal Ready 102 TS GND 9 Ground 106 PAE CTS 11 O Clear To Send 105 DPE RTS 12 I Request To Send 125 IA RI 13 O Ring Indicator Table 26 Characteristics of RS232C serial link Characteristics Symbols Conditions Min Typ Max Unit Input Voltage Range VINPUT Input Voltage Range 25 25 VDC Input Voltage Low VIL Input Voltage Low 0 4 1 ...

Страница 33: ...rent from standard mode 3 7 1 1 CTS signal When the GSM module is in Power OFF the CTS signal does not remain fix see Figure 15 Figure 15 Status of CTS signal When the module is in Power OFF the reception of a character on TDX wakes up the module Power ON but the character is lost The module switches back to Power OFF more or less 9 2 s after reception of the last character 3 7 1 2 RI signal The s...

Страница 34: ...25 IA RI 13 O Output 3 8VDC Table 28 Characteristics of option S0512A Output 3 8VDC sur RING signal Characteristics Symbols Conditions Min Typ Max Unit VOUT 6 5 V VDC 32V 3 8 VDC IOUT 100 mA Figure 17 Normalized signals of output 3 8VDC When the battery option S0431B is present the tension available on the pin 13 of the 15 pin sub D HD is Parameters Condition Min Typ Max Unit Vout Without power su...

Страница 35: ...T input Signal Connector 16 pins Pins number I O Kind of I O Description BOOT GND 3 9 I SCHMITT Boot modem Table 30 Conditions of use of BOOT signal Parameters Conditions Min Typ Max Unit VIL Input Voltage Low 0 3 0 8 VDC VIH Input Voltage High 2 3 3 VDC RIPU Internal Pull Up Resistor 5 38K Ω Figure 18 Internal electrical scheme of BOOT The use of the BOOT signal must be done through a transistor ...

Страница 36: ...tached it from the operator network Using the RESET does not restore the factory parameters Table 31 Description of RESET input Signal Connector 16 pins Pins number I O Kind of I O Description RESET GND 14 9 I SCHMITT Reset modem Table 32 Conditions of use of RESET signal Parameters Conditions Min Typ Max Unit VIL Input Voltage Low 0 3 0 8 VDC VIH Input Voltage High 2 3 3 VDC RIPU Internal Pull Up...

Страница 37: ...arization for a dynamic Microphone Micro Input Parameters Conditions Min Typ Max Units Microphone supply open circuit voltage output Provided by MIC with MIC 2 2 V Microphone supply current 2 mA Microphone supply output resistance 2 85 3 3 15 kΩ Microphone ground MICN 0 V Table 35 Characteristics recommended for the dynamic Microphone Micro Input Parameters Conditions Min Typ Max Units Maximum Inp...

Страница 38: ...escription of loudspeaker outputs Signal Connector 16 pins Pins number I O Kind of I O Description SPKP 10 S Analog Sortie positive SPKN 15 s Analog Sortie négative Table 37 Characteristics of loudspeaker output Speaker Output Parameters Conditions Min Typ Max Units Maximum differential output voltage Overdrive Gain stage 9 dB 6 4 VPP Common mode output voltage 1 6 V Output load resistance 8 Ω Sin...

Страница 39: ...e any modification Dct_427_02 3 10 3 Typical assembly On Figure 21 Typical assembly Handset we find the main AT command acting on the audio chain Figure 21 Typical assembly Handset Figure 22 Typical assembly Analog interface 3 11 SIM card Table 38 Characteristics of the SIM card power voltage Carte SIM 3 V or 1 8 V Format Mini SIM Standard 2FF Plug in UICC 25x15x0 76 mm ...

Страница 40: ...s not activated or OFF ON LED ON No network No SIM LED flashing 0 5s ON 1s OFF Module attached to GSM network 0 5s ON 0 5s OFF GPRS connected wait IP address 0 2s ON 0 8s OFF GPRS connected IP address is set 0 1s ON 0 1 s OFF Session TCP UDP open 3 12 4 The owner application The GenPro 25e contains your application The led status depends on your parameters 3 12 5 With Mode Transparent option S0502...

Страница 41: ... the accelerometer axis 4 GSM external antenna The GSM external antenna is connected to the modem via le Connector SMA Female The external antenna must respond to the characteristics described in the table below Figure 25 GSM external antenna Table 41 Characteristics of GSM external antenna Frequency band 900 880 960 MHz 1800 1710 1880 MHz Impedance 50 Ohms nominal Input power 2 W peak Gain VSWR 2...

Страница 42: ...er outside the cabin The circuit breaker is used for security reasons The circuit breaker is connected to the ground of the truck usually connected to the fuse box Most of truck circuit breakers do not cut the PLUS of the battery but cut its GROUND Figure 26 Recommended connection on the battery of a truck The scheme above shows a recommended power connection where the connection of the modem grou...

Страница 43: ...m for storage or transport in order to limit high discharges of the battery If the device is not used it has to be deactivated by sending the following command If the modem has an application developed with EGM Disconnect the external power supply of the modem And send the command AT GPIOSET 35 0 If the modem does not contain any embedded application via the Boot Loader menu Bootloader V4 09 GL54 ...

Страница 44: ...num casing of the modem is connected to the 0V GND of the power supply and to the 0V of the RS232 serial link To avoid any risk of conduction of the ground plane to other equipment the modem must be electrically insulated from its mechanical support 5 3 2 SIM card installation To install the SIM card it is recommended to do the following operations with the modem turned OFF Remove the SIM card cov...

Страница 45: ...r cable to the modem Use a communication software like Windows HyperTerminal set as follows Bits per second 115 200 bps Data Bits 8 Parity none Stop Bits 1 Flow control none 5 4 1 Checking the communication with the modem 5 4 1 1 Without Application The GenPro 25e does not contain any application it will return the menu of the Bootloader Menu by default when there is no application inside the equi...

Страница 46: ...ands see the documents u blox_AT_Commands_Manual_xxx pdf In the case where no communication can be established with the modem Check the RS232 connection between the DTE and the modem DCE Check the configuration of the COM port of the DTE 5 4 1 3 The application ERCOGENER EasePro_Vx The GenPro 25e contains the application EasePro_Vx Send the command ATI8 The modem returns the version example of dis...

Страница 47: ...he quality of the GSM signal do the following operations Use communication software like HyperTerminal enter the command AT CSQ The response is in the following format CSQ rssi ber with rssi indicates the reception level ber receive bit error rate Check the returned value rssi with the help of the table below Table 42 RSSI value Value of rssi Gain in dbm Interpretation Value of ber Interpretation ...

Страница 48: ...d in the SIM card reader of the modem 2 Use communication software like HyperTerminal and enter the following AT commands a AT CPIN xxxx to enter the PIN code The user has only 3 attempts to enter the PIN code After the third attempt only a second code code PUK supplied by the operator will allow you to choose a new PIN code b AT CREG to check the registration status on the network The response wi...

Страница 49: ... network The response will be of the following format CGREG mode stat with Mode configuration of the registration message not solicited Stat registration status 3 Check the registration status according to the value returned in the table below Table 45 Verification of modem registration on GPRS network Command Response Interpretation AT CGREG CGREG 1 0 The modem is not recognized by the network CG...

Страница 50: ...02 The DIN rail kit 35mm K002 allows a quick assembly disassembly on a DIN Rail 35mm OMEGA IEC EN 60715 DIN 35mm 7 5mm 5 9 1 1 Assembly of the Kit K002 Step 1 Insert the kit in the groove situated under the equipment Pay attention to the way of insertion the antenna must be upwards Step 2 Center the kit and tighten the 2 screws Figure 29 DIN rail fixing K002 5 9 1 2 Fixing on a DIN rail To assembl...

Страница 51: ...casing K011 K012 2 waterproof casings are available Figure 31 waterproof casing K011 K012 transparent 6 Client support ERCOGENER ensures the client support for all its modems sold You will then have access to The latest version of this document The datasheet of the product The latest versions of the OS user guides Certificates Application notes The support for the EGM developments is proposed as a...

Страница 52: ...le Power supply ERCOGENER reference 4402304215 Figure 32 4 wires Micro FIT cable Table 46 Characteristics of power supply cable Component Characteristics 4 pin connector Cable Length 1 5m Wire Section 0 75 mm Fuse FK2A 32V Signal Color VDC Red GND Black ENTREE 1 E1 Yellow SORTIE 1 S1 Brown Fuse reference Mini Blade for automobile 2A 32V color code grey Figure 33 Fuse Mini Blade Fuse F2A 32V Mini B...

Страница 53: ...7_02 ANNEX 2 wire Micro FIT cable connector Input Output ERCOGENER reference 4402000108 Figure 34 2 wire Micro FIT cable connector Input Output Side view of cable Table 47 Characteristics of 2 wire Micro FIT cable Component Characteristics 2 pin Micro FIT connector Cable Length 1 5m Wire Section 0 5 mm Table 48 Wiring of 2 wires cable N Broche Signal Color 1 Input 2 I2 Yellow 2 Input 3 I3 Blue ...

Страница 54: ...Cell Broadcast Message CE Conformité Européene European Conformity CLI Calling Line Identification CLIP Calling Line Identification Presentation CLIR Calling Line Identification Restriction CLK ClocK CM Connection Management CMOS Complementary Metal Oxide Semiconductor COLP Connected Line Identification Presentation COLR Connected Line Identification Restriction CPHS Common PCN Handset Specificati...

Страница 55: ...ute E UTRAN Evolved UTRAN FCC Federal Communications Commission U S FDD Frequency Division Duplex FDMA Frequency Division Multiple Access FDN Fixed Dialling Number FIT Series of connectors micro FIT FOAT Firmware Over AT FOTA Firmware Over The Air FR Full Rate FS File System FTA Full Type Approval FTP File Transfert Protocol FW Firmware GCF Global Certification Forum GDI Generic Digital Interfaces...

Страница 56: ...ts per second MCC Mobile Country Code MCS Modulation and Coding Scheme ME Mobile Equipment MIC MICrophone Micro FIT Family of connectors from Molex MIeC Manually Initiated eCall MIN MINimum MMI Man Machine Interface MN Mobile Network Software Subsystem MNC Mobile Network Code MNP Microcom Networking Protocol MO Mobile Originated MS Mobile Station also referred to as TE MSD Minimum Set of Data eCal...

Страница 57: ...RAM Random Access Memory RDI Restricted Digital Information RF Radio Frequency RFI Radio Frequency Interference RFU Reserved for Future Use RI Ring Indicator RMC Reference Measurement Channel RMS Root Mean Square ROPR Radio Output Power Reduction RTC Real Time Clock RTP Real time Transport Protocol RTS Request To Send Rx Receiver SAP SIM Access Profile SAR Specific Absorption Rate SC Service Centr...

Страница 58: ...profile Tx Transmitter TYP TYPical TZ Time Zone UART Universal Asynchronous Receiver Transmitter serial interface UCS2 Universal Character Set UDI Unrestricted Digital Information UDP User Datagram Protocol UI Unnumbered Information UICC Universal Integrated Circuit Card UIH Unnumbered Information with header Check UL Up link Transmission UMTS Universal Mobile Telecommunications System URC Unsolic...

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