Note 3 - Inventories - Schedule of Inventory (Details) - USD ($)	Mar. 31, 2017	Sep. 30, 2016
Refurbished and used:
Allowance for excess and obsolete inventory	$ (2,855,445)	$ (2,570,868)
	22,118,030	21,524,919
Cable TV [Member] | New Inventory [Member]
New:
Inventory Gross	14,500,705	15,087,495
Refurbished and used:
Inventory Gross	14,500,705	15,087,495
Cable TV [Member] | Refurbished Inventory [Member]
New:
Inventory Gross	3,299,490	3,383,079
Refurbished and used:
Inventory Gross	3,299,490	3,383,079
Allowance for excess and obsolete inventory	(2,519,586)	(2,219,586)
Telco [Member] | New Inventory [Member]
New:
Inventory Gross	362,089
Refurbished and used:
Inventory Gross	362,089
Telco [Member] | Refurbished Inventory [Member]
New:
Inventory Gross	6,811,191	5,625,213
Refurbished and used:
Inventory Gross	6,811,191	5,625,213
Allowance for excess and obsolete inventory	$ (335,859)	$ (351,282)