On Defining VoIP Telephone Systems - Business - Customer Service
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 also, leading to potential quality and security issues. Fortunately, most infrastructure manufacturer's supplies a collection of quality of service (QoS) and security measures to ensure the quality and security of voice transmissions.
The ability to transmit voiceover an IP network (for example, the Internet) allows many corporate networks to readily interconnect their sites without purchasing dedicated leased lines between their sites or relying on the public switched telephone network (PSTN), which imposes charges for certain call types (for instance, cross country and international calls).
With the arrival of VoIP technology, some confusion has arisen around its associated nomenclature. For example, consider the terms VoIP and IP telephony. Both refer to sending voice across an IP network. However, the main distinction involves the endpoints being used. For example, in a very 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 difference between VoIP and IP telephony, take into account the drawings below. In the top portion of the figure, the endpoints within the VoIP network are, an analogue phone (attached to an analogue port on the gateway) as well as a private branch exchange (PBX) (linked to a digital port over a different gateway). Because neither of the endpoints natively speaks IP, the topology is regarded as a VoIP network. With VoIP, a Gateway or another 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 with a call manager or call processing server, helping to make call routing decisions with respect to the IP phone. Therefore, the lower topology within the figure is recognized 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, rather than PBXs. The IP Phone itself performs voice-to-IP conversion, and voice enabled routers aren't required inside enterprise network. If a link with the PSTN is needed, a voice enabled router or any other gateway has to be added where calls are given to the PSTN. IP telephony describes cost-effective communication services, including voice, fax and voice messaging applications, transported through packet-switched IP network as opposed to the circuit switched PSTN.
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