As thirty-year telecom veterans, we’ve seen our share of changes in the Public Switched Telephone Network (PSTN) that includes the replacement of electromechanical switches with digital switching, the ...

从某种意义上而言，企业很可能是第一个网络电话（Voice over IP）以及其他一些基于IP网络相关服务的受益者。在VOIP到来之前，企业一般是通过基于电路交换的PSTN网络来进行实时语音通话和传真业务，而数据通信业务则是基于拨号上网，X.25，帧中继，ATM，IP等等。

传统方式的企业网络部署不仅需要架设内部网络（Intranet），而且还要同时租用其他的外部网络以提供电话、传真、网络管理等商业服务。而今，这些企业级业务主要集中在两大公众网络上发展：PSTN网络（包括移动通信中的蜂窝网络）和Internet网络。图5说明了 ...

华邦电子美国分公司推出USB音效控制器产品系列头两个型号的产品W681306及W681307。W681306是世界上首颗针对传统电话网络(PSTN)及USB接口双模式电话应用的高度整合IC，它整合了具备来电显示功能PSTN端口及双音多频(DTMF)音色支持的标准快速8位8051微控制器。

Update: this post contains corrected information, based on additional data sent to us by Keynote Systems. Keynote Systems is out with a five-week study that claims VoIP reliability and audio quality ...

One of the big advantages of VoIP vs. PSTN voice is VoIP’s capability to offer high definition or wideband voice– providing a fuller and richer sound quality that is similar to the leap made between ...

The POTRAZ report has shown a reasonably big jump in fixed-line connections primarily attributed to new VoIP connections. VoIP is an internet-based landline that uses internet infrastructure for calls ...

VoIP services (Voice over IP) are set to become more popular since the PSTN switch off slated for 2025 at this time will give lots of people both residential and business an opportunity to consider ...

We are a team of writers, experimenters and researchers providing you with the best advice with zero bias or partiality. 2027 might seem like a long way off, but it’ll come around sooner than you ...

Vodafone will shift its consumer customers with fixed network phone services to VoIP services and for business customers is launching what it says is a refreshed voice calling and internet service ...