Note 8 - Property, Plant and Equipment: Property, Plant and Equipment (Details) - USD ($)	Apr. 30, 2016	May 31, 2015
At cost:
Property, Plant and Equipment, Gross	$ 5,758,740	$ 8,380,876
Less: Accumulated depreciation	(4,744,180)	(4,577,472)
Property, plant and equipment, net	1,014,560	3,803,404
Computer and Software
At cost:
Property, Plant and Equipment, Gross	165,435	147,213
Telecommunication Equipment
At cost:
Property, Plant and Equipment, Gross	5,303,150	5,473,624
Furniture, Fixtures and Equipment
At cost:
Property, Plant and Equipment, Gross	54,628	57,976
Motor Vehicles
At cost:
Property, Plant and Equipment, Gross	119,870	167,175
Leasehold Improvements
At cost:
Property, Plant and Equipment, Gross	115,657	32,556
Construction in progress
At cost:
Property, Plant and Equipment, Gross	$ 0	$ 2,502,332