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, resulting in 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 capability to transmit voice-over 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, cross country and international calls).
With the advent of VoIP technology, some confusion has arisen around its associated nomenclature. For example, think about the terms VoIP and IP telephony. Both refer to sending voice across an IP network. However, the principal distinction requires the endpoints being used. For example, in a VoIP network, traditional analogue or digital circuits connect into an IP network, typically through some type of gateway. However, VoIP telephone systems contain endpoints that natively communicate using IP.
To further illustrate the excellence between VoIP and IP telephony, think about the drawings below. In the top portion of the figure, the endpoints inside the VoIP network are, an analogue phone (linked to an analogue port over a gateway) and a private branch exchange (PBX) (connected to a digital port over a different gateway). Because neither of the endpoints natively speaks IP, the topology is known as a VoIP network. With VoIP, a Gateway or any other device manages 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, making call routing decisions on behalf of the IP phone. Therefore, the bottom topology inside 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 on 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 are not required inside enterprise network. If a connection to the PSTN is necessary, a voice enabled router or another gateway has to be added where calls are given to the PSTN. IP telephony is the term for cost-effective communication services, including voice, fax and voice messaging applications, transported through the packet-switched IP network as opposed to the circuit switched PSTN.
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