Concentration of Credit Risk (Tables)

3 Months Ended

Oct. 29, 2016

Schedule that Represents A Significant Portion of the Company’s Customer Base and Each Over 10% of Total Revenue

Customers whose contract revenues exceeded 10% of total contract revenue during the three months ended October 29, 2016 or October 24, 2015 were as follows:



	For the Three Months Ended
	October 29, 2016	October 24, 2015
AT&T Inc.	29.0%	19.1%
CenturyLink, Inc.	15.7%	15.6%
Comcast Corporation	15.1%	12.0%