The fixed BWA systems is overviewed. Then a MAC implementation in a 3.5GHz BWA system is introduced, with focuse on the dynamic access technology of voice.

• 在简单介绍固定宽带无线接入系统之后 ；给出了一个 3.；5GHz固定宽带无线接入系统中的MAC实现方案；着重研究了话音业务如何动态地接入骨干网 ;