| 2. | We can classify the telecommunication network from target of service , movable / immovable users , signal form , bearer services , transmission media , zone of service , interchange mode etc . the telecommunication network services are the ‘ products ’ and can be classified based on the standards of sense , user active state , communication objective , information media and network hierarchies 对电信网效益进行了重新定义,深入地研究了电信网效益的内涵和分类、电信网经济效益和社会效益的形成机制、电信网经济效益的指数评价方法和dea评价方法,构造了电信网社会效益的评价体系。 |