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SEGMENT AND RELATED INFORMATION (Tables)
12 Months Ended
Dec. 31, 2016
Segment Reporting [Abstract]  
Schedule Of Segment Reporting Financial Information Including Total Assets By Segment [Table Text Block] Financial information by reportable segment as of and for the years ended December 31, 2016 and 2015 is presented below:

   2016   2015 
Net revenues by segment:          
Network solutions  $20,198,377   $21,534,831 
Test and measurement   11,128,350    11,574,275 
Total consolidated net revenues and net revenues of reportable segments  $31,326,727   $33,109,106 
           
Segment income (loss):          
Network solutions  $2,485,585   $3,290,220 
Test and measurement   (248,468)   729,090 
Income from reportable segments   2,237,117    4,019,310 
           
Other unallocated amounts:          
Corporate expenses   (4,785,226)   (3,272,271)
Other income - net   363,851    (24,418)
           
Consolidated income (loss) from operations before income taxes  $(2,184,258)  $722,621 
           
Depreciation and amortization by segment:          
Network solutions  $254,590   $225,194 
Test and measurement   248,470    233,439 
Total depreciation and amortization for reportable segments  $503,060   $458,633 
           
Capital expenditures by segment (a):          
Network solutions  $463,626   $371,718 
Test and measurement   354,962    91,710 
Total consolidated capital expenditures by reportable segment  $818,588   $463,428 
           
Total assets by segment:          
Network solutions  $10,594,770   $10,638,961 
Test and measurement   7,851,479    7,153,310 
Total assets for reportable segments   18,446,249    17,792,271 
           
Corporate assets, principally cash and cash equivalents and deferred income taxes   16,988,886    16,914,053 
Total consolidated assets  $35,435,135   $34,706,324 
     
(a) Net of equipment lease payable of $41,904 for 2016 (network solutions segment) and $48,804 for 2015 (test and measurement segment).
Schedule Of Net Consolidated Sales By Region [Table Text Block] Net consolidated revenues from operations by region were as follows:

   For the Years 
   Ended December 31, 
   2016   2015  
Americas  $24,155,154   $24,946,340 
Europe, Middle East, Africa (EMEA)   5,497,826    5,885,975 
Asia Pacific (APAC)   1,673,747    2,276,791 
   $31,326,727   $33,109,106