The US Patent and Trademark Office correctly found claims in an Estech Systems IP LLC patent covering quality improvements to voice over internet protocol telephone systems to be obvious and ...

Abstract: There is a great interest today in voice communication over the Internet (VoIP) with a high level quality of service (QoS). Our objective in this paper is to assess to what extent today's ...

Why settle for an ancient, analog PBX? The top voice over IP (VoIP) services we've tested deliver enterprise-grade phone system features for a small-business-friendly price.

Abstract: Since the late 90's IP telephony, commonly referred to as Voice over IP (VoIP), has been presented as a revolution on communications enabling the possibility to converge historically ...