Internet Service Provider (ISP), an Internet service provider, is a telecom operator that provides comprehensive Internet access services, information services, and value-added services to users.In the Internet application service industry chain "equipment supplier - basic network operator - content collector and producer - service provider - user", ISP is in the position of content collector, producer and service provider.
Chinese name
Network service provider
English name
network service provider;NSP
definition
A company that provides network services to the public.
Applied discipline
Communication technology (first level discipline), policy, regulation and management (second level discipline)
Network service provider, able to provideDial up Internet accessService, online browsing, downloading files, sending and receiving e-mail and other services are the entrance and bridge for network end users to enter the Internet.It includes Internet access services and Internet content provision services.This is mainly the Internet access service, that is, to connect your computer or otherterminal equipmentConnect to the Internet.
Since the connection to the Internet requires renting an international channel, the cost cannot be borne by ordinary users.Internet access providers, as intermediaries to provide connection services, need to invest a lot of money to establish transfer stations, rent international channels and a large number of local telephone lines, purchase a series of computer equipment, and provide connection services to local users through centralized use and pressure dispersion.Larger ISPs have their own high-speedLeased lineSo that they seldom rely on telecom providers and can provide better services for their customers.The largest international and regional Internet service providers are: AT&T WorldNet, IBM Global Network,MCI，Netcom，UUNet，And PSINet.
The ISP certificate refers to "the second typeValue added telecommunication serviceIt can be understood that the "access service" refers to "a series of supporting services for Internet access", and the access concept does not only refer to connecting onebroadbandPhysical access such as optical fiber also refers to the successful connection of a website and other information carriers to the Internet, and a series of supporting value-added services for Internet access, such as space rental,Server hostingEtc.Therefore, the expression of the Ministry of Information Industry is more complete than that of "technical service providers".
Classification
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ISPs at home and abroad
According to the main business division, China's ISPs mainly fall into the following categories
The instant messaging ISP mainly provides instant messaging services based on the Internet and mobile Internet.Since instant messaging ISPs own user resources, instant messaging ISPs can play a leading role in the business value chain of instant messaging, which is rare in the business model of cooperation with operators.Operators are also working on instant messaging, such as Feixin Mobile and Yixin Telecom.
3. Mobile Internet Service ISP
Mobile InternetBusiness ICP mainly provides mobile Internet services, including WAP Internet service, mobile instant messaging service, information download service, etc.
4. The portal ISP provides news information, cultural information and other information services
The portal ISP focuses on providing various information to the public, and has a stable user base.The portal ISP has a wide range of revenue sources, including online advertising, mobile business, online games and other businesses.For example:Sina、Sohu、NeteaseandYahooAnd other portals (including industry portals).
5. In the field of email marketing, ISP mainly refers to email service provider
RFC 6650 defines email service providers as companies or organizations that provide email sending, receiving and storage services for end users.This definition covers email hosting services, as well as companies, universities, institutions and individuals that independently manage email servers.
Common e-mail service providers include Netease, Tencent, Sina, Sohu and other mainstream ISPs in China.Gmail, Yahoo, Hotmail, AOL, etc. are common in foreign countries.
These ISPs usually implement the mail transfer protocol（SMTP）, Interactive Mail Access Protocol（IMAP）, Post Office Protocol (POP) and other proprietary protocols for information transmission and acquisition.
Information that ISP should provide
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If you have selected an ISP and applied to the ISP for network access, the ISP should provide you with the following information:
1) ISP access service phone number (the phone number called during modem connection).
6) NNTP server address of ISP (IP address of news server).
7) SMTP server address of ISP (IP address of mail server).
This information is necessary for connecting to the Internet. You will install and configure the Internet software in the future
This information will be required at the time of implementation.
Mainland China market
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Three operators
Three operators
Three major basic operators in China:
China Telecom: Dial up Internet accessADSL、1X、CDMA1X,EVDO rev.A、FTTx、Optical fiber access EPON, FDD/TDD LTE
China Mobile: Dial up Internet access, GPRS and EDGE wireless Internet accessTD-SCDMAWireless Internet access, a small part of FTTx, FDD LTE
China Unicom: GPRS, W-CDMA, wireless Internet access, dial-up Internet accessADSL、FTTx、FDD/TDD LTE
After telecom restructuring, China Netcom mergedChina Unicom, eliminate China Unicom CDMA and form a new Unicom;Incorporation of China RailcomChina Mobile, is its wholly-owned subsidiary;China Unicom CDMA merged into China Telecom to form New Telecom.
Others (in alphabetical order):
Beijing Gehua Cable Broadband: cable TV line
Beijing Telecom (Beijing Optical Fiber Access, IDC, began to cover Wuhan,Chongqing, Guangzhou, Shenzhen, Shanghai, Shenyang, Anhui, Xi'an)
