3cx技术支持系统如何工作？
advanced 3cx tech support package for hosted platforms is not included in the base price, and can be purchased as an add-on feature for $75.00. advanced support assists with configuring supported ip phones and sip trunks. basic customer support is available 24/5.
备份包括系统配置信息，呼叫历史数据和其他基本信息。但请注意，录制的文件和语音邮件未备份，并且应该由用户归档。