Voice over IP. The capability to carry normal telephony- style voice over and IP-based Internet with POTS - like functionality, reliability, and voice quality. VoIP enables a router to carry voice traffic (for example, telephone calls and faxes) over an IP network. In VoIP, the DSP segments the voice signal into frames, which then are coupled in groups of two and stored invoice packets. VoIP is a blanket term, which generally refers to Cisco's standard-based (for example H.323) approach to IP voice.

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Depending upon the requirement and affordability, host of products on above technology i.e. Single line to Multi line, Numeric Printer and Alpha numeric Printer based to Non Printer based solutions, Announcement of bill in your language of choice, Network management based Payphone are available.