交换设备使提交诸如通话保持、三方通话等通话控制功能成为可能，同时也提供对外设和服务（如声邮）的访问。

交换设备使提交诸如通话保持、三方通话等通话控制功能成为可能，同时也提供对外设和服务（如声邮）的访问。的英文翻译

基本释义

• Switching equipment makes possible the delivery of call-control features such as call hold and three-way calling,while also providing access to peripheral equipment and services,such as voicemail.