... dial exchange 拨号交换机 ; 自动交换区 ; 自动电话交换机 ; 拨号交换 panel dial exchange 升降制自动交换机 electronic dial exchange 电子式拨号交换机 ...
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文章主要就美国新泽西州多佛城推行的光纤-同轴电缆视频拨号交换网商用中所取得的经验教训作了分析和研究。
This article examines the lessons learned from the commercial deployment of a switched fiber-coax video dial tone network in Dover Township, New Jersey, USA.
像许多常年混迹于电信行业中的开发人员一样，我所学习到的是，若实现一个电话交换，则一定要在40毫秒内发出拨号音，这是一个难以实现的需求。
Like many other developers with a history in telecom, I learned that when you build a telephone switch, regulations say it must provide dial tone in 40ms, a difficult requirement to achieve.
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。
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.
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