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for data cable only. Standard 3v RS232 interface used.
This pinout is associated with 1 compatible devices or models. Show them>
Pin Signal Description
1 Vcharge +5V?
2 Gnd  
5 Tx  
7 Rx  
9 +12v  
According to 6 reports in our database (4 positive and 1 negative) this pinout should be correct.

Is this pinout
Source(s) of this and additional information: GSM pin-out by STU-mobil
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