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SIM 900A Location finding and Timing Advance

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ovlnmurty

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Dear All,

I want to take GSM Timing Advance. I am using AT+CENG=2 and getting serving cell details and neighboring cell short details.
Here is some sample...

+CENG:0,"0045,37,99,404,49,06,c79f,10,05,42,255"
+CENG:1,"0041,22,17,404,49,42"
+CENG:2,"0039,20,28,404,49,42"
+CENG:3,"0033,15,38,404,49,42"
+CENG:4,"0046,19,127,000,00,0"
+CENG:5,"0044,16,127,000,00,0"
+CENG:6,"0038,11,127,000,00,0"

As per the LCS specifications, the last parameter of +CENG:0 (Timing Advance) should be in the range of 0 - 63. Each step should be an distance increment of 550 Meters from the Cell.

My Question is: I tried this in many locations but, i am always getting it as 255 which is not in the allowed range. any help in this regard will be appreciated. Thanks.
 

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