On Defining VoIP Telephone Systems - Business - Customer Service
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On Defining VoIP Telephone Systems - Business - Customer Service
VoIP sends packetized voice over an IP network. Typically, the IP network serves as a data network as well, causing potential quality and security issues. Fortunately, most infrastructure manufacturer's supplies a collection of quality of service (QoS) and safety measures to ensure the quality and security of voice transmissions.
The power to transmit voiceover an IP network (as an example, the Internet) allows many corporate networks to readily interconnect their sites without purchasing dedicated leased lines between their sites or counting on the public switched telephone network (PSTN), which imposes charges for many call types (for instance, long-distance and international calls).
With the arrival of VoIP technology, some confusion has arisen around its associated nomenclature. For example, look at the terms VoIP and IP telephony. Both reference sending voice across an IP network. However, the principal distinction involves the endpoints being used. For example, inside a VoIP network, traditional analogue or digital circuits connect into an IP network, typically through some kind of gateway. However, VoIP telephone systems contain endpoints that natively communicate using IP.
To further illustrate the distinction between VoIP and IP telephony, look at the drawings below. In the top portion of the figure, the endpoints inside the VoIP network are, an analogue phone (associated with an analogue port on the gateway) plus a private branch exchange (PBX) (linked to a digital port on a different gateway). Because neither of those endpoints natively speaks IP, the topology is known as a VoIP network. With VoIP, a Gateway or any other device protects the conversion of Voice into IP packets.
The bottom portion of the drawings shows an IP phone, which does natively communicate using IP. The IP phone registers using a call manager or call processing server, which makes call routing decisions on behalf of the IP phone. Therefore, underneath topology within the figure is known as an IP telephony network. With IP telephony the VoIP telephone systems be mindful on the conversion of Voice into IP packets. Realize, however, that some literature might use the terms VoIP and IP telephony interchangeably.
IP telephony replaces traditional phones with VoIP Telephone Systems and uses call processing software, normally with an appliance, server or cloud based for call control and signalling, as opposed to PBXs. The IP Phone itself performs voice-to-IP conversion, and voice enabled routers aren't required inside the enterprise network. If a link with the PSTN is essential, a voice enabled router or another gateway should be added where calls are given to the PSTN. IP telephony refers to cost-effective communication services, including voice, fax and voice messaging applications, transported via the packet-switched IP network instead of the circuit switched PSTN.
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