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四、无线接入网的接入方式 可以说，原则上各种现有无线通信技术均可以作为无线接入技术。但是，它们都不具备Ｖ５接口，成本高，而又不能提供与有线一样的话音质量，所以，往往不能直接用于无线接入，而必须加以简化（改造）或专门设计。无线接入方式可以分为两大类，第 １类?
Fourth, access to wireless access network It can be said that, in principle, all existing wireless communications technology can be used as a wireless access technology. However, they do not all have the V5 interface and are expensive and can not provide the same voice quality as wired, so often they can not be used directly for wireless access and must be simplified (retrofitted) or specifically designed. Wireless access can be divided into two categories, the first category?