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PRINCIPAL CLIENTS (Table)
6 Months Ended
Jun. 30, 2012
Risks and Uncertainties [Abstract]  
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

The following table represents revenue concentration of our principal clients.

 

    Three Months Ended     Six Months Ended  
    June 30,     June 30,  
    2012     2011     2012     2011  
AT&T Services, Inc. and AT&T Mobility, LLC, subsidiaries of AT&T Inc. ("AT&T")     33.2 %     63.0 %     35.9 %     64.1 %
T-Mobile USA, Inc., a subsidiary of Deutsche Telekom     31.7 %     17.3 %     30.1 %     16.8 %