Application Note basic Voice and SMS Connection with ...rupert.id.au/tutorials/arduino/SIM900/SIM900_application_Note.pdf · Application Note—basic Voice and SMS Connection with

Application Note—basic Voice and

SMS Connection with SIM900 rev03

This application note and

any associated software is

provided in an “as-is” con-

dition. No warranties,

whether expressed, implied

or statutory, including, but

not limited to implied war-

ranties of merchantability

and fitness for a particular

purpose apply to this appli-

cation note or associated

software. Otto Wireless

Solutions, SIMCom and

Otto Marketing shall not in

any circumstances, be li-

able for special, incidental

or consequential damages

for any reason whatsoever.

This application note, and

any associated software, or

parts thereof, may not be

reproduced or distributed

without the explicit permis-

sion of Otto Wireless Solu-

tions.

DISCLAIMER

Tel: (011) 791 1033 / email: [email protected] / url: www.otto.co.za

GSM DEVICE SIM900

FIRMWARE R11.00

ADDITIONAL NOTE AT COMMANDS MUST BE UPPER CASE

COMPILED BY MARK COXEN

EMAIL [email protected]

MOBILE +27 82 888 6275

APPLICATION NOTE DETAILS

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DISCLAIMER


NETWORK SMS CENTRE NUMBERS

NETWORK NUMBER

VODACOM "+27829119" or "+27829129"

MTN “+27831000113"

CELL C "+27841000000"

VIRGIN MOBILE "+27741000050"

GENERAL ENQUIRIES

AT COMMAND FUNCTION

AT Must return :ok”, use to check comms

ATI Identifies Firmware revision

ATE0 Switches off the echo—1 enables the echo

AT+GMR Identifies FULL Firmware revision

AT+GMI Identifies manufacturer

AT+GMM Identifies module type i.e. SIM_900

AT+GSN Identifies module IMEI number

AT+CSCA? Checks The SMS service centre Number

AT+CNUM? Gives you the SIM telephone number (If an Error occurs, number is not set on SIM card)

AT+CREG? Acknowledges that the SIM and Modem are connected to the network

AT+CSQ Signal Strength - 0=-113dBm; 1= -111dBm;2->30 -109 TO -53dBm; 31= -51dBm< ; 99= No Reception

AT+GCAP Services offered on Modem -> GSM; FCLASS (Fax); +DS (data Services)

AT+CMEE=2 Changes error warnings from number codes to text

AT&W Stores all user settings

AT&V Check the settings of the module

AT&F Reset to manufacturer defaults

AT COMMAND FUNCTION

AT+CPBS="ON" Set the value for writing the mobile number to the SIM Card

AT+CPBW=1,“+27*********”,145, “NAME”

Write the number to slot 1 on the sim card, ********* is the phone number, 145 is International dialing

AT+CNUM If set, the number will be shown

AT+CPBS="SM" Set back to SIM card storage

SET THE MOBILE NUMBER

GSM DEVICE SIM900

FIRMWARE R11.00




MOBILE +27 82 888 6275


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PIN MANAGEMENT

AT COMMAND FUNCTION

AT+CPIN? If "+CPIN: READY" is returned, no need to enter pin number, if “SIM PUK” is returned, see below

AT+CPIN="xxxx" Unlock/Unlock the pin number on the simcard

AT+CPWD="SC",“0000”,“1234” SC is for sim pin 0000 is old pin and 1234 is new pin

AT+CLCK="SC",1,”XXXX” Removes the SIM pasword request on power up

AT+CLCK="SC",0,”XXXX” Activates the SIM pasword at power up

AT+CPIN=“XXXX”,”XXXX” SIM PUK—enter the PUK number and the new PIN number



























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DISCLAIMER


SET UP THE MODULE FOR SMS

AT COMMAND FUNCTION

AT+CMGF=1 sets text mode (0 sets Packet Data Mode)

AT+CSCS="GSM" sets GSM-character text mode

AT+CNMI=2,1,0,0 new message indications - Default is set

AT+CPBS="ON" sets the phone book memory storage

AT+CPBW=1,”+27*********”,145,”Module No”

set the sim card phone number into memory location 1 on SIM-Card

AT+CSCS? Check that the operator SMS centre number is set

AT+CSCA="+27.....",145 check that operator service centre number is set

AT+CSMP=49,255,0,241&W sets the parameter for SMS delivery reports and saves this set-ting

AT+CNMI=2,1,0,1,0&W second parameter to set the SMS delivery deport and saves the setting

AT+CSAS=0 save SMS settingsTO PROFILE "0" OR "1"

SENDING A MESSAGE EXPLANATION

AT+CMGS = " +27.."(Enter) Destination number to which you send the message

>your message < ctrl-z>

SMS COMMANDS

GSM DEVICE SIM900

FIRMWARE R11.00




MOBILE +27 82 888 6275


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SMS DELIVERY REPORT

NOTES EXPLANATION

6, Delivery report is from SMS service central

22, Message number that was sent

“Cell number” Cell number the message was delivered to

145, International format

First Time Stamp, Time of sending

Second Time Stamp, Time of Delivery

0 TP status in integer format



























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DISCLAIMER


SAVE A MESSAGE TO MEMORY EXPLANATION

AT+CMGW Saves message to SIM memory

>your message < ctrl-z> Type the info of the message to be stored

+CMGW: 1 The location of the stored message is returned

SENDING AND SMS FROM MEMORY EXPLANATION

AT+CMSS=1,”+27…”,145 Location of stored message to send, destination number must be set

DELETE MESSAGES EXPLANATION

AT+CMGDA="DEL READ" Deletes all read messages stored on the SIM card

AT+CMGDA="DEL UNREAD" Deletes all unread messages stored on the SIM card

AT+CMGDA="DEL SENT" Deletes all sent messages stored on the SIM card

AT+CMGDA="DEL UNSENT" Deletes all unsent messages stored on the SIM card

AT+CMGDA="DEL INBOX" Deletes all received messages stored on the SIM card

AT+CMGDA="DEL ALL" Deletes all messages stored on the SIM card

SMS COMMANDS CONTINUED

GSM DEVICE SIM900

FIRMWARE R11.00




MOBILE +27 82 888 6275


Delivery report format: +CDS 6,22,”=2782…”,145,”09/12/24,09:09:18+08”,”09/12/24,09”09:20+08”,0

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PHONE BOOK

NUMBER STORAGE LOCATION EXPLANATION

AT+CPBS=“SM” Specifies that the SIM card is to be used for the phone book

WRITING TO PHONE BOOK

AT+CPBW=2,”+27…”,145,”NAME HERE” Set location (2), “number”, international dial-ing (145) and the “name” (NOTE: location 1 is the SIM card number)

READ FROM THE PHONE BOOK

AT+CPBR=1,5 Read from location 1 to location 5



























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DISCLAIMER


GSM DEVICE SIM900

FIRMWARE R11.00




MOBILE +27 82 888 6275


CHECKING AIRTIME BALANCE

AT COMMAND FUNCTION

AT+CUSD=1,”XXX”,15 Format: 1 = on, “xxx” = number to dial, 15 = Data Coding

AT+CUSD=1,”100”,15 Vodacom number

AT+CUSD=1,”141”,15 MTN number

AT+CUSD=1,”101”,15 CELL-C number

AT+CUSD=1,”101”,15 Virgin Mobile number

AT+CUSD=0 Switch off USD when done

SEND A “PLEASE CALL ME”

AT COMMAND FUNCTION

AT+CUSD=1,”*140*+27XXXXXXXXX#”,15 Vodacom number

AT+CUSD=1,”*141*+27XXXXXXXXX#”,15 MTN number

AT+CUSD=1,”*111*+27XXXXXXXXX#”,15 CELL-C number

AT+CUSD=1,”*125*+27XXXXXXXXX#”,15 Virgin Mobile number


SEND A “PLEASE RECHARGE ME”

AT COMMAND FUNCTION

AT+CUSD=1,”*140*02*+27XXXXXXXXX#”,15 Vodacom number


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DISCLAIMER


GSM DEVICE SIM900

FIRMWARE R11.00




MOBILE +27 82 888 6275


LOAD AIRTIME

AT COMMAND FUNCTION

AT+CUSD=1,”*100*01*XXXXXXXXX#”,15 Vodacom number

AT+CUSD=1,”*141*XXXXXXXXX#”,15 MTN number

AT+CUSD=1,”*102*XXXXXXXXX#”,15 CELL-C number

AT+CUSD=1,”*102*XXXXXXXXX#”,15 Virgin Mobile number


MAKING A VOICE CALL

SET THE AUDIO PARAMETERS FUNCTION

AT+CHFA? Check audio channel setting

AT+CHFA: 0 0 is handset and 1 is auxiliary audio

AT+CHFA=0 Command used to select handset use

ATL3 Sets the audio volume 1-9

AT+CMUT=1 0 is mute and 1 is active (NOTE: only works when a call is active

CALL MANAGEMENT

ATD+2783xxxx; Dial number—take note of semi-colon

ATD>SM1 Dial from a phone book location

ATDL Redial last number

ATA Answer and incoming call

ATH End current call

SET UP THE TIME

AT COMMAND FUNCTION

AT+CCLK? Checks the current time

AT+CCLK= “YY/MM/DD,HH:MM:SS+02” Time format, with the +02 at the end being the time zone

CHECK TEMPERATURE STATUS

AT COMMAND FUNCTION

AT+CMTE=0 0 is off and 1 is on - format is as follows: “ENABLE / DIS-ABLE power off”,temperature

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Documents

Application Note basic Voice and SMS Connection with ...rupert.id.au/tutorials/arduino/SIM900/SIM900_application_Note.pdf · Application Note—basic Voice and SMS Connection with