I've been looking around for a "commercially supported cloud-based VOIP PBX that provides dial tone" for the past few weeks and I keep coming up empty on the SIP phones.

在过去的几周里，我四处在寻觅着一个“商业支撑下、基于云的并可提供拨号音的网络电话交换机”，而一直无法享用SIP电话。

youdao

It has taken VOIP at least a decade to get here. We needed it to get into the cloud, and we needed get a wide selection of high quality sip phones.

IP电话用了至少十年才有了今天的成就，我们早就需要把它放到云计算下面，我们早就需要在高质量SIP电话方面有更广阔的选择。

youdao

The article, depending on the interception standard of ETSI standard, studies the interception of the wireless telecommunications, VOIP system based on SIP and IP network.

本文主要根据欧洲电信标准(etsi)的有关侦听标准，对无线通信系统、基于SIP的VOIP系统和IP网络的合法侦听进行了研究。

youdao