短語詞組短語Application Compatibility Layer 兼容層Application Framework Layer 框架層Application Suppoa Layer 應(yīng)用支持層Application -Layer Routing 應(yīng)用層路由application n layer 應(yīng)用層VoIP Application Interface Layer VoIP 應(yīng)用介麪層Application Adaptation Layer 應(yīng)用適配層 返回 application layer