Business Segment Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jun. 27, 2010
Segment revenue, gross profit and operating income (loss)
Net revenue	$ 237,716	$ 208,146	$ 221,316
Cost of sales	133,704	118,414	123,796
Gross profit	104,012	89,732	97,520
Operating expenses	87,168	82,601	85,391
Operating income (loss)	16,844	7,131	12,129
Communications [Member]
Segment revenue, gross profit and operating income (loss)
Net revenue	132,345	119,104	139,079
Cost of sales	65,781	60,112	69,945
Gross profit	66,564	58,992	69,134
Operating expenses	37,867	36,302	37,137
Operating income (loss)	28,697	22,690	31,997
Government and Enterprise [Member]
Segment revenue, gross profit and operating income (loss)
Net revenue	105,371	89,042	82,237
Cost of sales	66,745	48,951	48,226
Gross profit	38,626	40,091	34,011
Operating expenses	27,001	24,251	21,366
Operating income (loss)	11,625	15,840	12,645
Corporate [Member]
Segment revenue, gross profit and operating income (loss)
Cost of sales	1,178	9,351	5,625
Gross profit	(1,178)	(9,351)	(5,625)
Operating expenses	22,300	22,048	26,888
Operating income (loss)	$ (23,478)	$ (31,399)	$ (32,513)