题目内容：
● 关于接入网技术，下面描述中错误的是 （26） 。（26）
A. 公共交换电话网（PSTN）采用电路交换技术
B. 公共数据网X.25采用分组交换技术
C. 综合业务数字网可以传送语音和数据业务
D. 帧中继网提供无连接的传输服务
参考答案：
选择题：● 关于接入网技术,下面描述中错误的是 (26) 。 (26)A. 公共交换电话网(PSTN)采用电路交换技术 B.
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- 题目类型：选择题
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