一、添加电话设备（管理端）
1.入口：登录管理端--点击全部应用--打开场所与设备
2.点击设备管理--添加--输入信息（MAC地址和SN在设备后方标签）--点击提交--添加成功
3.平台添加完设备，需重启设备
二、家长购买套餐，订阅公话分组（小程序）
1.购买套餐
点击视频电话--点击购买套餐--选择套餐购买--购买成功
点击视频电话--点击购买套餐--选择套餐购买--购买成功
2.设备授权
点击设备授权--允许--点击授权--授权成功
三、学生拨打电话（设备端）
点击0k--输入学生学号--点击ok--输入密码（默认666666）--点击ok--点击上下可以选择家长--点击ok拨打电话
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