What is voip-network telephone noun detailed explanation

Overview explanation

VoIP is the abbreviation for voice over Internet protocol, meaning to transmit voice over the Internet (Internet). VoIP technology is also often referred to as network telephony, IP telephony, or Internet telephony technology.

VoIP's most basic function is to provide internet-based, low-cost voice and fax services. It can also extend further to ip-based voice services. VoIP is therefore a technology that provides IP telephony services and some value-added services based on this. Specifically, VoIP uses the computer communication of the grouping, digital transmission technology, the first speech data compression coding processing, and then the data by IP and other related protocols packaging, data packets through the IP network transmission to the receiving place and then again, after the decoding decompression back to the original voice signal. Compared with the traditional voice service, VoIP can multiply the number of calls under the same bandwidth, so it can realize low-cost voice transmission, fax and other traditional telecommunications services. In addition, because VoIP effectively leverages the infrastructure of the Internet and the global IP environment, it can be used for such things as unified messaging, virtual telephony, virtual voice/Fax mailboxes, number search services, Internet call centers, Internet call management, videoconferencing, e-commerce, Information Store forwarding and other emerging data services to provide strong support.

VoIP phone as a new business, has its own characteristics and traditional business can not match the advantages, and has become a hotspot in the field of Internet applications. According to the current development trend of network technology, it can be foreseen that in the near future, IP telephony will gradually replace the traditional PSTN telephone.

Users can use VoIP terminals to achieve with the field offices or agencies, customers 0 cost calls to save a large number of local and long-distance charges. Small and medium-sized enterprises have generally established a local area network and a small router to achieve shared access to the Internet, and the company's internal telephone network at this time, only need to equip VoIP terminals, that is, VoIP can be achieved across the region 0 call calls.

Detailed terminology

1. What is VoIP?

VoIP (Voice over Internet Protocol) is a kind of IP telephony, and the introduction of the corresponding value-added services technology. The biggest advantage of VoIP is the wide adoption of the Internet and global IP interconnection environment, providing more and better services than the traditional business. VoIP can deliver voice, fax, video, and data services cheaply on an IP network, such as unified messaging, virtual telephony, virtual voice/Fax mailboxes, number search services, Internet call centers, Internet call management, videoconferencing, E-commerce, Fax store forwarding and the storage and forwarding of various information.

2. What is a gateway?

Gateways (gateway) are also called Network Connectors, protocol converters. Gateway on the transport layer to achieve network interconnection, is the most complex network interconnection equipment, only for two high-level protocols different network interconnection. The structure of the gateway is similar to that of routers, and the interconnect layer is different. Gateways can be used both for WAN interconnection and for LAN interconnection.

3. What is Net Guard?

Network guard: Is the end of the network (such as telephone) gateway and other calls and management functions, it is an important part of VoIP network system.

4. What is a public network?

Public network is the general Circuit Exchange Network, that is, now netcom, telecommunications, railcom and other erection of the backbone and branch network.

5. What is soft switching?

SoftSwitch is one of the core devices of network evolution and next generation packet network, it is independent of the transmission network, mainly completes the call control, resource allocation, protocol processing, routing, authentication, billing and other major functions, at the same time can provide users with the existing circuit switches can provide all the business, and to provide the third party with programmable ability.

6. What is a network fax?

Electronic Fax series business is based on the PSTN and the Internet, integrated telephone network, intelligent Network and Internet technology development of value-added services. Fax files are stored in a graphical format, and users can send fax information to the Internet fax information storage network through a fax machine and receive faxes via a computer or fax machine.

7. What is H.323?

H.323 is the transmission standard of the International Telecommunication Organization ITU-T (Media) on packet Network (Packet network).

8. What is VoIP Gateway?

VoIP gateway means the devices that connect VoIP to the traditional PSTN network interface and convert the related protocols.