因此，网络电话系统功能全面，包括自动总机，语音邮件，呼叫排队等。

Therefore most VOIP phone systems come with a rich feature set, including auto attendant, voice mail, call queueing and more.

youdao

因此，网络电话系统功能全面，包括自动总机，语音邮件，呼叫排队等。

Therefore most VOIP phone systems come with a rich feature set, including auto attendant, voice mail, call queueing and more.

youdao