ARDUINO UNO AND SIM900A MODEM

hello all,

first of giving brief of project.

my project name  "gsm motor starter authorization "

connection details follows:

arduino pin no. 2 ( i.e. rx) ----> sim900a ttl tx
arduino pin no. 3 ( i.e. tx) ----> sim900a ttl rx
arduino ground                ----> sim900a ttl ground

what have done far

my project application giving miss call gsm modem arduino collect receiving phone number , compare predefined number have write in code. if first miss call arduino energized 1 relay motor start command. have use relay no contact start motor

after when give second miss call modem again arduino compare number , energized other relay motor stopped command. have used relay nc contact motor stopped command.

i using arduino gsm.h library project

as above description project working 

what want implement

my problem whenever want add predefined number compare receiving number , every time have programmed arduino works fine is there way can save number in sim card , read numbers sim card , compare receiving number
by project has no dependency on me , can save number in simcard , project becomes independent..    

i have done googling didnt find fruitful results.

as know software serial library conflict gsm.h library there way implement @ commands arduino gsm library     

following 1 link supposed work didnt     

http://arduino.stackexchange.com/questions/1370/getting-the-contacts-storing-contacts-to-sim-card

hello
please give me code deatil
how programm

thanks

Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > ARDUINO UNO AND SIM900A MODEM

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